19 (nineteen) is the natural number following 18 and preceding 20. It is a prime number. 10 (ten) is an even natural number following 9 and preceding 11. ... Look up nine in Wiktionary, the free dictionary. ... In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 18 (eighteen) is the natural number following 17 and preceding 19. ... 20 (twenty) is the natural number following 19 and preceding 21. ... In mathematics, a prime number (or a prime) is a natural number which has exactly two distinct natural number divisors: 1 and itself. ...

Aleph-0, the smallest infinite cardinal In mathematics, cardinal numbers, or cardinals for short, are a generalized kind of number used to denote the size of a set, known as its cardinality. ... In set theory, ordinal, ordinal number, and transfinite ordinal number refer to a type of number introduced by Georg Cantor in 1897, to accommodate infinite sequences and to classify sets with certain kinds of order structures on them. ... A numeral is a symbol or group of symbols, or a word in a natural language that represents a number. ... ... In mathematics, a prime number (or a prime) is a natural number which has exactly two distinct natural number divisors: 1 and itself. ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... The octal numeral system, or oct for short, is the base-8 number system, and uses the digits 0 to 7. ... The duodecimal (also known as base-12 or dozenal) system is a numeral system using twelve as its base. ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0–9 and A–F, or a–f. ... Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ...

In mathematics

Nineteen is the 8th smallest prime number. The sequence continues 23, 29, 31, 37... 19 is the seventh Mersenne prime exponent. 19 is the smallest Higgs prime for squares and cubes that has an index among Higgs primes that is less than its index among primes overall (because 17 is not a Higgs prime). In mathematics, a prime number (or a prime) is a natural number which has exactly two distinct natural number divisors: 1 and itself. ... In mathematics, a Mersenne number is a number that is one less than a power of two. ... A Higgs prime is a prime number with a totient (one less than the prime) that evenly divides the square of the product of the smaller Higgs primes. ...

Every positive integer is the sum of at most nineteen fourth powers (see Waring's problem). In common usage positive is sometimes used in affirmation, as a synonym for yes or to express certainty. Look up Positive on Wiktionary, the free dictionary In mathematics, a number is called positive if it is bigger than zero. ... The integers are commonly denoted by the above symbol. ... Four is devoted to the development of an uninhibited artistic exploration of ideas, discourses and new trends in contemporary art and its practices. ... Exponentiation is a mathematical operation, written an, involving two numbers, the base a and the exponent n. ... In number theory, Warings problem, proposed in 1770 by Edward Waring, asks whether for every natural number k there exists an associated positive integer s such that every natural number is the sum of at most s kth powers of natural numbers. ...

Nineteen is a centered triangular number, centered hexagonal number, and an octahedral number. A centered triangular number is a centered figurate number that represents a triangle with a dot in the center and all other dots surrounding the center in successive triangular layers. ... It has been suggested that this article or section be merged into Centered polygonal number. ... An octahedral number is a figurate number that represents an octahedron, or two pyramids placed together, one upside-down underneath the other. ...

Nineteen is a Heegner number. In number theory, a Heegner number is a positive integer n such that the quadratic field Q(√-n) has class number 1. ...

19 is the fourth alternating factorial, as it is equal to −(1!) + 2! + −(3!) + 4! An alternating factorial is the sum of the first n factorials with the odd-indexed factorials multiplied by −1 if n is even, and the even-indexed factorials multiplied by −1 if n is odd, resulting in an alternation of signs of the summands (or alternation of addition and subtraction...

With respect to divisibility, nineteen has a very simple test: 19 divides 100a + b if and only if it divides a + 4b. In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ...

In base 10, it is a Keith number, because it recurs in a Fibonacci-like sequence started from its base 10 digits: 1, 9, 10, 19... The decimal expansion of 1/19 has a period of maximum length: 18 digits. Regardless of the base, 19 is a strictly non-palindromic number. In Roman numerals, however, 19 is the largest palindromic prime. In mathematics, a Keith number or repfigit number is an integer that appears as a term in a linear recurrence relation with initial terms based off its own digits. ... A tiling with squares whose sides are successive Fibonacci numbers in length A Fibonacci spiral, created by drawing arcs connecting the opposite corners of squares in the Fibonacci tiling shown above – see golden spiral. ... A strictly non-palindromic number is an integer n that is not palindromic in any number base up to n − 2. ... A palindromic prime is a prime number that is also a palindromic number. ...

In science

• The atomic number of potassium.

It has been suggested that List of elements by atomic number be merged into this article or section. ... General Name, Symbol, Number potassium, K, 19 Chemical series alkali metals Group, Period, Block 1, 4, s Appearance silvery white Standard atomic weight 39. ...

In religion

• The number of years in each cycle of the intercalated Hebrew calendar, in which 7 of the 19 years are leap years; it is used by Jews to calculate the time of observance of Jewish holidays.
• The number of angels guarding Hell according to the Qur'an: "Over it is nineteen" (74:30)
• The number of surat Maryam in the Qur'an
• The number of letters in the Bismillah formula "In the name of God, Most Gracious, Most Merciful" in Arabic [1]
• A number encoded in the Qur'an [2] as claimed by Dr. Rashad Khalifa, a biochemist from the USA, about the Qur'an [3]
• The Bahá'í calendar is structured such that a year contains 19 months of 19 days each, as well as a 19-year cycle and a 361-year (19x19) supercycle. The Báb and his disciples formed a group of 19, and there were 19 Apostles of Bahá'u'lláh.

Intercalation is the insertioffn of an extra day, week or month into some calendar years to make the calendar follow the seasons. ... The Hebrew calendar (Hebrew: ‎) or Jewish calendar is the annual calendar used in Judaism. ... A leap year (or intercalary year) is a year containing an extra day (or, in case of lunisolar calendars, an extra month) in order to keep the calendar year synchronised with the astronomical or seasonal year. ... The Archangel Michael by Guido Reni wears a late Roman military outfit in this 17th century depiction An angel is a supernatural being found in many religions. ... For other uses, see Hell (disambiguation). ... The Qur’ān [1] (Arabic: ;, literally the recitation; also sometimes transliterated as Quran, Koran, or Alcoran) is the central religious text of Islam. ... Surat Al-Muddaththir (The Cloaked One, The Man Wearing A Cloak) is the 74th sura of the Quran with 56 ayat. ... Sura (sometimes spelt Surah , plural Suwar ) is an Arabic term literally meaning something enclosed or surrounded by a fence or wall. ... Sura Maryam (Arabic: سورة مريم ) (Mary) is the 19th sura of the Quran and is a Makkan sura. ... The Qur’ān [1] (Arabic: ;, literally the recitation; also sometimes transliterated as Quran, Koran, or Alcoran) is the central religious text of Islam. ... Phrases containing Allah Allah is Arabic for God and is the only god (monotheism) in the religion of Islam. ... Allah is the Arabic language word for God. ... Arabic ( or just ) is the largest living member of the Semitic language family in terms of speakers. ... Rashad Khalifa, 1989 Rashad Khalifa (November 19, 1935 – January 31, 1990) was an Egyptian biochemist who became a US citizen and took residence in Tucson, Arizona. ... The Qur’ān [1] (Arabic: ;, literally the recitation; also sometimes transliterated as Quran, Koran, or Alcoran) is the central religious text of Islam. ... The Baháí calendar, also called the Badí‘ calendar, used by the Baháí Faith, is a solar calendar with regular years of 365 days, and leap years of 366 days. ... Shrine of the Báb at night from above in Haifa, Israel. ... The Letters of the Living was a title provided by the Báb to the first eighteen disciples of the Bábí movement. ... The Apostles of Baháulláh were nineteen eminent early followers of Baháulláh, the founder of the Baháí Faith. ...

In music

"19" is a 1985 hit song by Paul Hardcastle, with a strong anti-war message, including sampled soundbites taken from a documentary about the Vietnam War in which 19 is claimed to have been the average age of United States soldiers killed in the conflict (an assertion which is widely disputed). The song was parodied by British satirist Rory Bremner as N-n-nineteen, Not Out, the title referring to the English cricket team's risible performance against the West Indies in the previous year. Nineteen is a track by English musician Paul Hardcastle, released in 1985. ... See also: other events of 1985 Musical groups established in 1985 Record labels established in 1985 list of years in music 1980s in music // January 28 - Various artists, including Ray Charles, Bob Dylan, Michael Jackson, Billy Joel, Cyndi Lauper, Steve Perry, Kenny Loggins, Willie Nelson, Lionel Richie, Smokey Robinson, Kenny... Paul Hardcastle (born December 10, 1957, in London) is an English composer and musician specializing in the synthesizer. ... Anti war protest in Melbourne, Australia, 2003 Anti_war is a name that is widely adopted by any social movement or person that seeks to end or oppose a future or current war. ... Sampling may refer to: Sampling (signal processing), converting a continuous signal into a discrete signal Sampling (music), re-using portions of sound recordings in a piece Sampling (statistics), selection of observations to acquire some knowledge of a statistical population Sampling (case studies), selection of cases for single or multiple case... Combatants Republic of Vietnam United States Republic of Korea Thailand Australia New Zealand The Philippines National Front for the Liberation of South Vietnam Democratic Republic of Vietnam People’s Republic of China Democratic Peoples Republic of Korea Strength US 1,000,000 South Korea 300,000 Australia 48,000... Rory Bremner FKC (born 6 April 1961, Edinburgh, Scotland) is a British impressionist and comedian, noted for his political satire. ... Bowler Shaun Pollock bowls to batsman Michael Hussey. ...

With a similar name and anti-Vietnam War theme, I Was Only 19 (A Walk in the Light Green), by the Australian group Redgum reached number one on the Australian charts in 1983. In 2005 a hip hop version of the song was produced by The Herd, and was voted in at #18 in the 2005 Triple J Hottest 100 playlist. A Walk in the Light Green is the most widely recognised song produced by Australian folk group Redgum. ... Redgum were an Australian folk and political music group. ... See also: 1983 in music (UK) Musical groups established in 1983 Record labels established in 1983 // Michael Jacksons Thriller, the most successful album not only of 1983, but of all time, was released in 1982 and began its epic domination of the music charts the following year, 1983. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... ‹ The template below (Australian Music Portal) is being considered for deletion. ... The Herd are an Australian hip hop outfit from the suburbs of Sydney. ... The Triple J Hottest 100 is an annual music poll, based on the votes of Australian youth radio station Triple J listeners, in order to determine their favourite song of the year. ...

Other songs with the number 19 in their titles:

"Nineteen" by Buck-O-Nine

"Nineteen" by Phil Lynott

"Nineteen" by the Old 97's

"Hey, Nineteen" by Steely Dan

"19th Nervous Breakdown" by the Rolling Stones

"Nineteen Forever" by Joe Jackson

"I Got A Feeling (Just Nineteen)" by Eagles of Death Metal

"Nineteen in Naples" by Jonathan Richman

Nineteen has been used as an alternative to twelve for a division of the octave into equal parts. This idea goes back to Salinas in the sixteenth century, and is interesting in part because it gives a system of meantone tuning, being close to 1/3 comma meantone. Buck-O-Nine is an American ska punk band which was formed in San Diego, California, in 1991. ... Philip Parris Lynott (August 20, 1949–January 4, 1986) was an Irish singer, instrumentalist and songwriter, who first came to prominence as a member of Thin Lizzy. ... The Old 97s (L-R: Philip Peeples, Ken Bethea, Murry Hammond, and Rhett Miller) The Old 97s are an alt-country band originally based in Dallas, Texas. ... This article does not cite any references or sources. ... This article is about the rock band. ... There are several people named Joe Jackson: Joe Jackson, musician Shoeless Joe Jackson, baseball player Joseph Jackson, father and manager of the Jackson 5 Joe Jackson, football player This is a disambiguation page, a list of pages that otherwise might share the same title. ... Eagles of Death Metal (EofDM) is an American garage rock band formed by Jesse Hughes and Josh Homme. ... For other uses see, Naples (disambiguation) and Napoli (disambiguation) Location of the city of Naples (red dot) within Italy. ... Jonathan Richman (born 16 May 1951) is an American proto-punk icon and one of the progenitors of indie rock. ... In music, Francisco de Salinas (1513-1590) was a music theorist and organist noted as among the first to describe meantone temperament in mathematically precise terms, and one of the first (along with Guillaume Costeley) to describe, in effect, 19 equal temperament. ... Meantone temperament is a system of musical tuning. ...

19 is also the title of Evan Yo's first album, because Evan was nineteen years old when the album released. 19 , Evan Yos newest full album, was released on October 6, 2006. ... Evan Yo (Chinese: ; Hanyu Pinyin: ; Wade-Giles: Tsai minyou) (born November 12, 1986) is a Taiwanese Mandopop singer who released his Solo Debut album in October, 2006. ... Evan Yo (Chinese: ; Hanyu Pinyin: ; Wade-Giles: Tsai minyou) (born November 12, 1986) is a Taiwanese Mandopop singer who released his Solo Debut album in October, 2006. ...

In other fields

Nineteen is

• The nineteenth state to enter the Union of the United States was Indiana
• Part of the name of a breakfast cereal: Product 19
• The Soviet submarine K-19 was the first Soviet nuclear ballistic submarine
• I-19 is the designation for a US interstate highway in Arizona
• the height, in feet, of the statues of Abraham Lincoln and Thomas Jefferson in their respective memorials.
• 19 years is very close to 235 lunations. See Metonic cycle
• A significant recurring number (which comes to denote a sense of unreality and foreboding) in the Dark Tower novels by author Stephen King
• In golf the "19th hole" is the clubhouse bar. In miniature golf it is an extra hole on which the winner earns an instant prize
• A number encoded in Chemistry as claimed by Dr. Peter Plichta, a German chemist [4]. Also see [5] for Plichta's claimed code-19 in chemistry
• The retired football jersey number of Hall of Famers Johnny Unitas and Lance Alworth
• The retired baseball jersey number of Baseball Hall of Fame members Robin Yount and Tony Gwynn.
• The retired basketball jersey number of Willis Reed.
• The retired hockey jersey number of Steve Yzerman.
• The number of Colorado Avalanche center and captain Joe Sakic
• 19 x 19 is also the standard size of a Go Board
• It is not possible to earn a score of 19 in a single hand of cribbage

Motto: (Out Of Many, One) (traditional) In God We Trust (1956 to date) Anthem: The Star-Spangled Banner Capital Washington D.C. Largest city New York City None at federal level (English de facto) Government Federal constitutional republic  - President George Walker Bush (R)  - Vice President Dick Cheney (R) Independence from... Official language(s) English Capital Indianapolis Largest city Indianapolis Area  Ranked 38th  - Total 36,418 sq mi (94,321 km²)  - Width 140 miles (225 km)  - Length 270 miles (435 km)  - % water 1. ... This article does not cite any references or sources. ... K-19 was a Hotel class submarine which suffered various severe accidents. ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Motto: (Out Of Many, One) (traditional) In God We Trust (1956 to date) Anthem: The Star-Spangled Banner Capital Washington D.C. Largest city New York City None at federal level (English de facto) Government Federal constitutional republic  - President George Walker Bush (R)  - Vice President Dick Cheney (R) Independence from... Interstate Highways in the lower 48 states. ... Official language(s) English Spoken language(s) English 74. ... This article is about a foot as a unit of length. ... The monument, which is on the National Mall in Washington, D.C., is a United States Presidential Memorial built to honor 16th President Abraham Lincoln. ... The Jefferson Memorial from outside The Thomas Jefferson Memorial is a presidential memorial in Washington, D.C. that is dedicated to Thomas Jefferson, an American Founding Father and the third president of the United States. ... Lunation is the mean time for one lunar phase cycle (i. ... The Metonic cycle or Enneadecaeteris in astronomy and calendar studies is a particular approximate common multiple of the year (specifically, the seasonal tropical year) and the synodic month. ... The Dark Tower painting by Michael Whelan The Dark Tower is a series of seven books by American writer Stephen King that tells the tale of lead character Roland Deschains quest for the Dark Tower. ... Stephen Edwin King (born September 21, 1947) is an American author of over 200 stories including over 50 bestselling horror novels. ... This article is about the sport. ... Miniature golf Minigolf is a miniature version of the sport of golf. ... John Constantine Johnny Unitas (May 7, 1933 – September 11, 2002), nicknamed The Golden Arm, was a professional American football player in the 1950s through the 1970s. ... Lance Dwight Alworth (born August 3, 1940 in Houston, Texas) is a former American football wide receiver. ... The National Baseball Hall of Fame and Museum, located at 62 Main Street in Cooperstown, New York, is a semi-official museum operated by private interests serving as the central point for the study of the history of baseball in the United States and beyond, the display of baseball-related... Robin Rachel Yount (born September 16, 1955 in Danville, Illinois) is a former Major League Baseball player who spent his entire career with the Milwaukee Brewers (1974-1994). ... Anthony Keith Gwynn (born May 9, 1960 in Los Angeles, California) is a former right fielder in Major League Baseball, statistically one of the best and most consistent hitters in baseball history. ... Willis Reed Jr. ... Stephen Gregory Yzerman (born May 9, 1965, in Cranbrook, British Columbia, Canada) is a former professional hockey player who played his entire career with the Detroit Red Wings. ... Joseph Steve Sakic (SA kihk[1]) (born July 7, 1969 in Burnaby, British Columbia) is a professional ice hockey center who has played his entire National Hockey League (NHL) career with the Quebec Nordiques/Colorado Avalanche franchise. ... Go is a strategic East Asian board game for two players. ... For the pocket billiards game of the same name, see Cribbage (pool). ...

Historical years

A.D. 19, 19 B.C., 1919, 2019, etc. For other uses, see number 19. ... Centuries: 2nd century BC - 1st century BC - 1st century Decades: 60s BC 50s BC 40s BC 30s BC 20s BC - 10s BC - 0s 10s 20s 30s 40s Years: 24 BC 23 BC 22 BC 21 BC 20 BC 19 BC 18 BC 17 BC 16 BC 15 BC 14 BC... Year 1919 (MCMXIX) was a common year starting on Wednesday (link will display the full calendar). ... 2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar. ...

External links

• 19.ORG
• Prime Curios for the number 19
• Agir XIX
• Code 19 Deceit