PrimeGrid New SR5 Mega Prime!

[Newshound]

On 19 June 2018, 09:48:29 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=327926 by finding the mega prime:

327926*5^2542838-1

The prime is 1,777,374 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 60th overall. 71 k's now remain in the Riesel Base 5 Problem.

The discovery was made by Selya Tsuji (stsuji) of Japan using an Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz with 32 GB RAM running Microsoft Windows 10 Professional Edition. This computer took about 43 hours 40 minutes to complete the primality test using LLR. Selya is a member of Team 2ch.

For more details, please see the official announcement.


SOURCE http://www.primegrid.com/forum_thread.php?id=8115