79 (seventy-nine) is the natural number following 78 and preceding 80. In mathematics, a natural number is either a positive integer (1, 2, 3, 4, ...) or a non-negative integer (0, 1, 2, 3, 4, ...). The former definition is generally used in number theory, while the latter is preferred in set theory and computer science. ... 78 (seventy-eight) is the natural number following 77 and followed by 79. ... 80 (eighty) is the natural number following 79 and preceding 81. ...

In linguistics, cardinal numbers is the name given to number words that are used for quantity (one, two, three), as opposed to ordinal numbers, words that are used for order (first, second, third). ... Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... In mathematics, factorization or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. ... In mathematics, a prime number (or a prime) is a natural number that has exactly two (distinct) natural number divisors, which are 1 and the prime number 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 (base 2 numerals) represents numeric values using two symbols, typically 0 and 1. ... In mathematics and computer science, base-16, hexadecimal, 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. ...

In mathematics

Seventy-nine is the 22nd prime number. The next is eighty-three. Seventy-nine is a permutable prime, with ninety-seven. 79 is a Kynea number. In mathematics, a prime number (or a prime) is a natural number that has exactly two (distinct) natural number divisors, which are 1 and the prime number itself. ... 83 is the natural number following 82 and preceding 84. ... A permutable prime (sometimes called a primutation) is a prime number, which, in a given base, can have its digits switched to any possible permutation and still spell a prime number. ... 97 is the natural number following 96 and preceding 98. ... A Kynéa number (pronounced: Ka-Nay), named after Kynéa R. Griffith, is an integer of the form . ...

79 is a strictly non-palindromic number. A strictly non-palindromic number is an integer n that is not palindromic in any number base up to n − 2. ...

79 is the smallest number that can't be represented as a sum of fewer than 19 fourth powers.

In science

• The atomic number of gold.

In astronomy, In chemistry and physics, the atomic number (Z) is the number of protons found in the nucleus of an atom. ... General Name, Symbol, Number gold, Au, 79 Chemical series transition metals Group, Period, Block 11, 6, d Appearance metallic yellow Atomic mass 196. ... A giant Hubble mosaic of the Crab Nebula, a supernova remnant. ...

Messier object M79, a magnitude 8.5 globular cluster in the constellation Lepus

The New General Catalogue object NGC 79, a galaxy in the constellation Andromeda

The Saros number of the solar eclipse series which began on -434 May 21 and ended on 828 June 16. The duration of Saros series 79 was 1262.1 years, and it contained 71 solar eclipses.

The Saros number of the lunar eclipse series which began on -150 February 16 and ended on 1166 April 12. The duration of Saros series 79 was 1316.2 years, and it contained 74 lunar eclipses.

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... M79 refers to: Messier 79 a Messier object and a globular cluster in the Lepus constellation. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... The Globular Cluster M80 in the constellation Scorpius is located about 28,000 light years from the Sun and contains hundreds of thousands of stars. ... This article or section does not cite its references or sources. ... Lepus (Latin for Hare) is a constellation, lying just south of Orion, and possibly representing a hare being chased by him. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 56,000 light years in diameter and approximately 60 million light years distant. ... Andromeda is a constellation named for the princess Andromeda (which is Greek for Ruler over men), a character in Greek mythology. ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the sun and the moon. ... Photo taken during the 1999 eclipse. ... May 21 is the 141st day of the year in the Gregorian calendar (142nd in leap years). ... Events Egbert became first King of England Alcamo was founded by the Muslim commander al-Kamuk. ... June 16 is the 167th day of the year in the Gregorian calendar (168th in leap years), with 198 days remaining. ... An eclipse refers to the phenomenon of one body passing into the shadow cast by another body. ... February 16 is the 47th day of the year in the Gregorian Calendar. ... // Events Marko III succeeds Yoannis V as patriarch of Alexandria. ... April 12 is the 102nd day of the year in the Gregorian calendar (103rd in leap years). ...

In sports

• 79 is the jersey number of McGuffey High School football's Eric Burdett

McGuffey High School is one of four schools that make up the McGuffey School District in Pennsylvania. ...

In other fields

Seventy-nine is also:

• The designation of Interstate 79, a freeway that runs from West Virginia to Pennsylvania.
• The number of Star Trek: The Original Series episodes, not counting the first pilot, "The Cage", which was enclosed into "The Menagerie".
• The year AD 79, 79 BC, or 1979.