|
139 (another Prime Pages' Curiosity) |
|
|
Curios:
Curios Search:
Participate:
|
139 and 149 are the first consecutive primes differing by 10. [Wells] 3139 + 2 is prime. Stirling's formula in terms of the gamma function contains the prime number 139. 139 divides the sum of the first 139 composite numbers. [Honaker] The first prime which has the same end-digit as its consecutive prime. [Silva] The largest prime factor among the smallest pair of odd amicable numbers. The smallest prime which contains one prime digit, one composite digit, and one digit that is neither prime nor composite. [Brown] The smallest prime factor of the smallest multidigit composite Lucas number with a prime index. The number of chromatically unique simple graphs on seven nodes. [Post] STB 139 is the cryptic name for a nightspot located in the Rippongi district of Tokyo, Japan. In 1975, Pomerance showed that the second largest prime factor of an odd perfect number should be at least 139.
Prime Curios! © 1999-2008 (all rights
reserved)
|