AMDave
02-01-2021, 11:41 AM
Another DIV Mega Prime!
On 19 January 2021, 15:48:46 UTC, PrimeGrid's Fermat Divisor Search found the Mega Prime: 31*2^8348000+1 (https://primes.utm.edu/primes/page.php?id=131593) The prime is 2,513,000 digits long and enters Chris Caldwell's “The Largest Known Primes Database” (https://primes.utm.edu/primes) ranked 73rd overall. The discovery was made by Igor Karpenko (A1ex01 (https://www.primegrid.com/show_user.php?userid=41735)) of the Ukraine using an Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz with 4GB RAM, running Linux. This computer took about 2 hours, 52 minutes to complete the primality test using LLR. Igor Karpenko is a member of the Ukraine (https://www.primegrid.com/team_display.php?teamid=343) team. For more details, please see the official announcement (https://www.primegrid.com/download/DIV-8348000.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=9552)
On 19 January 2021, 15:48:46 UTC, PrimeGrid's Fermat Divisor Search found the Mega Prime: 31*2^8348000+1 (https://primes.utm.edu/primes/page.php?id=131593) The prime is 2,513,000 digits long and enters Chris Caldwell's “The Largest Known Primes Database” (https://primes.utm.edu/primes) ranked 73rd overall. The discovery was made by Igor Karpenko (A1ex01 (https://www.primegrid.com/show_user.php?userid=41735)) of the Ukraine using an Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz with 4GB RAM, running Linux. This computer took about 2 hours, 52 minutes to complete the primality test using LLR. Igor Karpenko is a member of the Ukraine (https://www.primegrid.com/team_display.php?teamid=343) team. For more details, please see the official announcement (https://www.primegrid.com/download/DIV-8348000.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=9552)