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math lessons - Lucky number (336 words) |
 | A lucky number is a natural number in a set which is generated by a "sieve" similar to the Sieve of Eratosthenes that generates the primes. |
| Lucky numbers share some properties with primes, such as asymptotic behaviour according to the prime number theorem; also Goldbach's conjecture has been extended to them. |
| Sloane, Neil J. A sequence of lucky primes - A031157: http://www.research.att.com/cgi-bin/access.cgi/as/njas/sequences/eisA.cgi?Anum=031157 |
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Lucky prime - Wikipedia, the free encyclopedia (147 words) |
| A lucky prime is a number that is a prime number and a lucky number. |
| Twin lucky primes occur less often than twin primes in general, but in a similar proportion. |
| Twin primes are primes which are separated by two (example 5 and 7); these are only rare due to the methods by which lucky numbers are determined. |
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