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uselessness commented on the word mersenne primes

I was just learning about this a couple days ago, particularly in reference to the Mersenne Twister. I still don't understand it, but I think it's cool (in the dorkiest possible way, of course).

November 21, 2007

seanahan commented on the word mersenne primes

see gimps

November 20, 2007

sionnach commented on the word mersenne primes

A Mersenne number is a number which is one less than a power of 2. A Mersenne prime is a Mersenne number which is also a prime. The first three Mersenne primes are 3, 7, and 31.

For a Mersenne number to be a candidate prime, the relevant power of 2 must be a prime itself. This condition is necessary, but not sufficient, as 2^^11 - 1 = 2047 = 23 x 89.

November 19, 2007