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11-11-12, 10:40 PM
On 2 November 2012, 3:47:30 UTC, PrimeGrid’s Proth Prime Search project found the Mega Prime: 7*2^5775996+1 (http://primes.utm.edu/primes/page.php?id=110070) The prime is 1,738,749 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 24th overall. The discovery was made by Martyn Elvy (Martyn Elvy (http://www.primegrid.com/show_user.php?userid=171728)) of New Zealand using an Intel(R) Xeon(R) CPU E5345 @ 2.33GHz with 3GB RAM, running Windows Server 2003. This computer took just over 11 hours 16 minutes to complete the primality test using LLR. Martyn is a member of the NZ.BOINC (http://www.primegrid.com/team_display.php?teamid=1750) team. The prime was verified by Robert Ruge (robert (http://www.primegrid.com/show_user.php?userid=137415)) of Australia using an Intel(R) Xeon(R) CPU X5650 @ 2.67GHz with 10 GB RAM, running Linux. This computer took just under 6 hours 24 minutes to complete the primality test using LLR. For more details, please see the official announcement (http://www.primegrid.com/download/PPS-5775996.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=4639)
More... (http://www.primegrid.com/forum_thread.php?id=4639)