AMDave
04-26-2014, 06:56 PM
Another New SR5 Prime Found!
On 9 April 2014, 18:33:30 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=207394 by finding the mega prime: 207394*5^1612573-1 (http://primes.utm.edu/primes/page.php?id=117731)The prime is 1,127,146 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 59th overall. This is the largest known base 5 mega prime. 83 k's now remain in the Riesel Base 5 Problem.The discovery was made by Honza Cholt (Honza (http://www.primegrid.com/show_user.php?userid=352)) of the Czech Republic using an Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz with 12GB RAM running Microsoft Windows Server 2008. This computer took about 16 hours and 5 minutes to complete the primality test using LLR. Honza is a member of the BOINC.SK (http://www.primegrid.com/team_display.php?teamid=133) team.For more details, please see the official announcement (http://www.primegrid.com/download/SR5-207394.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=5667)
On 9 April 2014, 18:33:30 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=207394 by finding the mega prime: 207394*5^1612573-1 (http://primes.utm.edu/primes/page.php?id=117731)The prime is 1,127,146 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 59th overall. This is the largest known base 5 mega prime. 83 k's now remain in the Riesel Base 5 Problem.The discovery was made by Honza Cholt (Honza (http://www.primegrid.com/show_user.php?userid=352)) of the Czech Republic using an Intel(R) Xeon(R) CPU E5-2609 0 @ 2.40GHz with 12GB RAM running Microsoft Windows Server 2008. This computer took about 16 hours and 5 minutes to complete the primality test using LLR. Honza is a member of the BOINC.SK (http://www.primegrid.com/team_display.php?teamid=133) team.For more details, please see the official announcement (http://www.primegrid.com/download/SR5-207394.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=5667)