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02-26-12, 11:54 AM
k=121 has finally opened its vault. After 6 years of stubbornness, it relinquishes its strong hold on primes. On 25 Feb 2012, 06:34:08 UTC, PrimeGrid’s 27121 Prime Search, through PRPNet and in collaboration with the 12121 Search, has found the mega prime: 121*2^4553899-1 (http://primes.utm.edu/primes/page.php?id=105070)The prime is 1,370,863 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 28th for overall. This is PrimeGrid's 22nd mega prime.The discovery was made by Timothy D. Winslow of the United States. More details and official announcement to come.

More... (http://www.primegrid.com/forum_thread.php?id=4117)