Free-DC
05-12-2010, 12:26 PM
On 25 Jul 2009 1:11:48 UTC, PrimeGrid's Cullen Prime Search found another World Record Cullen Mega Prime: 6679881·26679881+1 The prime is 2,010,852 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes/) ranked 15th overall. It is the largest known Cullen prime and the largest found Mega Prime using LLR. This remarkable discovery comes less than 4 months after the last prime and is only the 16th known Cullen prime. Contact with PrimeGrid participant (spinner@ (http://www.primegrid.com/show_user.php?userid=3285)) has not been returned. However, the participant is from Japan and is a member of Team 2ch (http://www.primegrid.com/team_display.php?teamid=194). The prime was found using an Intel Xeon L5420 @ 2.50GHz with 6 GB RAM running Windows XP Professional. This computer took about 71 hours 58 minutes to complete the primality test. More details to come after contact is made.
More... (http://www.primegrid.com/forum_thread.php?id=2474)
More... (http://www.primegrid.com/forum_thread.php?id=2474)