GIMPS

From SeventeenOrBust

A DistributedComputing project looking for Mersenne primes. Mersenne primes are primes that can be written 2^p-1, where p itself is prime. The search was engineered by GeorgeWoltman, who has been a major contributor to SeventeenOrBust, in the mid-1990s. The GreatInternetMersennePrimeSearch has for many years held the record for discovering the largest-known prime.

Read more about the Great Internet Mersenne Prime Search at their website, http://www.mersenne.org/.