AMDave
01-24-2014, 05:04 AM
World Record 321 Mega Prime Found!
On 14 January 2014, 15:26:41 UTC, PrimeGrid’s 321 Prime Search project found the mega prime: 3*2^10829346+1 (http://primes.utm.edu/primes/page.php?id=116922) The prime is 3,259,959 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 12th overall. This is the largest known 321 mega prime and the largest prime found to date at PrimeGrid! The discovery was made by Sai Yik Tang (tomakey (http://www.primegrid.com/show_user.php?userid=42037)) of Malaysia using an Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 17 hours and 40 minutes to complete the primality test using LLR. The prime was verified on 14 January 2014 20:23:24 UTC, by schnabelt (http://www.primegrid.com/show_user.php?userid=122703) of Germany using an Intel(R) Pentium(R) CPU G850 @ 2.90GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 22 hours and 47 minutes to complete the primality test using LLR. For more details, please see the official announcement (http://www.primegrid.com/download/321-10829346.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=5483)
On 14 January 2014, 15:26:41 UTC, PrimeGrid’s 321 Prime Search project found the mega prime: 3*2^10829346+1 (http://primes.utm.edu/primes/page.php?id=116922) The prime is 3,259,959 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 12th overall. This is the largest known 321 mega prime and the largest prime found to date at PrimeGrid! The discovery was made by Sai Yik Tang (tomakey (http://www.primegrid.com/show_user.php?userid=42037)) of Malaysia using an Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 17 hours and 40 minutes to complete the primality test using LLR. The prime was verified on 14 January 2014 20:23:24 UTC, by schnabelt (http://www.primegrid.com/show_user.php?userid=122703) of Germany using an Intel(R) Pentium(R) CPU G850 @ 2.90GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 22 hours and 47 minutes to complete the primality test using LLR. For more details, please see the official announcement (http://www.primegrid.com/download/321-10829346.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=5483)