AMDave
07-19-2022, 12:53 AM
SR5 Mega Prime Find!
On 19 June 2022, 04:26:15 UTC, PrimeGrid?s Sierpinski/Riesel Base 5 Problem project eliminated k=63838 by finding the mega prime: 63838*5^3887851-1 (https://primes.utm.edu/primes/page.php?id=134068)The prime is 2,717,497 digits long and enters Chris Caldwell's ?The Largest Known Primes Database? (https://primes.utm.edu/primes) ranked 99th overall. 58 k?s now remain in the Riesel Base 5 problem.The discovery was made by Scott Lee (freestman (https://www.primegrid.com/show_user.php?userid=24140)) of China using an AMD Ryzen 5 2600X Six-Core Processor with 32GB RAM, running Microsoft Windows 11 Professional x64 Edition. This computer took about 4 hours, 34 minutes to complete the prp test using LLR2. Scott is a member of the team, Chinese Dream (https://www.primegrid.com/team_display.php?teamid=8303).The prime was verified on 19 June 2022, 22:29 UTC, by an Intel(R) Core(TM) i3-9100F CPU @ 3.60GHz with 16GB RAM, running Linux. This computer took about 11 hours and 57 minutes to complete the primality test using LLR2.For more details, please see the official announcement (https://www.primegrid.com/download/SR5-63838.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=9965)
On 19 June 2022, 04:26:15 UTC, PrimeGrid?s Sierpinski/Riesel Base 5 Problem project eliminated k=63838 by finding the mega prime: 63838*5^3887851-1 (https://primes.utm.edu/primes/page.php?id=134068)The prime is 2,717,497 digits long and enters Chris Caldwell's ?The Largest Known Primes Database? (https://primes.utm.edu/primes) ranked 99th overall. 58 k?s now remain in the Riesel Base 5 problem.The discovery was made by Scott Lee (freestman (https://www.primegrid.com/show_user.php?userid=24140)) of China using an AMD Ryzen 5 2600X Six-Core Processor with 32GB RAM, running Microsoft Windows 11 Professional x64 Edition. This computer took about 4 hours, 34 minutes to complete the prp test using LLR2. Scott is a member of the team, Chinese Dream (https://www.primegrid.com/team_display.php?teamid=8303).The prime was verified on 19 June 2022, 22:29 UTC, by an Intel(R) Core(TM) i3-9100F CPU @ 3.60GHz with 16GB RAM, running Linux. This computer took about 11 hours and 57 minutes to complete the primality test using LLR2.For more details, please see the official announcement (https://www.primegrid.com/download/SR5-63838.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=9965)