  |
The Prime Pages - http://primes.utm.edu/
Prof. Chris Caldwell's database of virtually every large or otherwise interesting prime number known; includes the 5,000 largest known prime numbers and records for specific types. |
  |
Great Internet Mersenne Prime Search - http://www.mersenne.org/
Online search for Mersenne prime numbers, found largest several primes. |
  |
ECMNET - http://www.loria.fr/~zimmerma/records/ecmnet.html
Project to factor numbers using the elliptic curve method. Client and server software. |
  |
Seventeen Or Bust - http://www.seventeenorbust.com
A distributed attack on the Sierpinski problem, trying to find the last remaining 17 numbers. |
  |
Ellipsa - Elliptic Curve Primality Proving - http://www.ellipsa.net/
Primo, a primality proving program based on the ECPP algorithm. With Primo one can check crypto-primes and prove whether or not they are actually prime. |