http://www.mersenne.org/prime.htm
41st Known Mersenne Prime Reported!!
On May 15, 2004, a GIMPS computer reported finding the 41st known Mersenne Prime. Additional quick checks have shown this is nearly certainly a genuine report. However, to be rigorous, we must test the discovery on a different computer using different software. This will probably take a month. The actual number will be announced when that test completes.
40th Known Mersenne Prime Found!!
On November 17, 2003 Michael Shafer's computer found the 40th known Mersenne prime, 2(20,996,011)-1! This number "weighs in" at a whopping 6,320,430 decimal digits! This is also the largest known prime number, surpassing GIMPS' last discovery by over 2 million digits.
New Mersenne Prime Found!!!
