AMDave
10-14-2014, 09:15 PM
TRP Mega Prime!
On 2 October 2014, 3:02:44 UTC, PrimeGrid’s The Riesel Problem project eliminated k=402539 by finding the mega prime: 402539*2^7173024-1 (http://primes.utm.edu/primes/page.php?id=118583)The prime is 2,159,301 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 20th overall. This is the largest prime found in The Riesel Problem and PrimeGrid's 13th elimination. 51 k's now remain.The discovery was made by Walter Darimont (Walter Darimont (http://www.primegrid.com/show_user.php?userid=99669)) of Belgium using an Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz with 4 GB RAM running Linux. This computer took about 11 hours and 10 minutes to complete the primality test using LLR. Walter is a member of the Aggie the Pew (http://www.primegrid.com/team_display.php?teamid=2280) Team.The prime was verified on 2 October 2013, 9:51:42 UTC, by Tom Greer (tng* (http://www.primegrid.com/show_user.php?userid=66603)) of the United States using an Intel(R) Xeon(R) CPU E5520 @ 2.27GHz with 24 GB RAM running Microsoft Windows 7 Professional. This computer took about 25 hours and 35 minutes to complete the primality test using LLR. Tom is a member of the Sicituradastra. (http://www.primegrid.com/team_display.php?teamid=1596) Team.For more details, please see the official announcement (http://www.primegrid.com/download/TRP-402539.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=5933)
On 2 October 2014, 3:02:44 UTC, PrimeGrid’s The Riesel Problem project eliminated k=402539 by finding the mega prime: 402539*2^7173024-1 (http://primes.utm.edu/primes/page.php?id=118583)The prime is 2,159,301 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 20th overall. This is the largest prime found in The Riesel Problem and PrimeGrid's 13th elimination. 51 k's now remain.The discovery was made by Walter Darimont (Walter Darimont (http://www.primegrid.com/show_user.php?userid=99669)) of Belgium using an Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz with 4 GB RAM running Linux. This computer took about 11 hours and 10 minutes to complete the primality test using LLR. Walter is a member of the Aggie the Pew (http://www.primegrid.com/team_display.php?teamid=2280) Team.The prime was verified on 2 October 2013, 9:51:42 UTC, by Tom Greer (tng* (http://www.primegrid.com/show_user.php?userid=66603)) of the United States using an Intel(R) Xeon(R) CPU E5520 @ 2.27GHz with 24 GB RAM running Microsoft Windows 7 Professional. This computer took about 25 hours and 35 minutes to complete the primality test using LLR. Tom is a member of the Sicituradastra. (http://www.primegrid.com/team_display.php?teamid=1596) Team.For more details, please see the official announcement (http://www.primegrid.com/download/TRP-402539.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=5933)