Great Internet Mersenne Prime Search (GIMPS) - Large distributed project to primality test all Mersenne numbers. Mersenne Prime Digits and Names - Landon Curt Noll lists the decimal, English, and American expansions of all the known Mersenne primes. Marin Mersenne - Biography of the Minim friar and his contributions to number theory. Includes references, pictures, and cross-references to topics. Ars Technica Team Prime Rib - A distributed computing team dedicated to finding Mersenne prime numbers. mersenneforum.org - A forum about prime numbers and computerized searches for more of them. Includes discussions of software and hardware issues encountered by searchers. The Prime Pages: Mersenne Primes - History, theorems, tables, conjectures, heuristics. Mersenne Wiki - Information about the Great Internet Mersenne Prime Search, other distributed prime projects, and the related mathematics. Internet PrimeNet Server - PrimeNet is a distributed computing project for the Great Internet Mersenne Prime Search, co-ordinating the assignment of work and collection of results.