On 9 April 2012 6:31:14 UTC, PrimeGrid’s Sophie Germain Prime Search found a World Record Sophie Germain prime: 18543637900515*2^666667-1
The prime is 200,701 digits long, eclipsing the previous record of 79,911 digits. It enters Chris Caldwell's “The Largest Known Primes Database
” ranked 1st for Sophie Germain primes.
The discovery was made by Philipp Bliedung
) of the United States using an Intel Core i7 950 @ 3.07GHz with 12 GB RAM running Linux. Philipp is a member of the USA
The prime was verified on 9 April 2012 9:36:15 UTC, by Lee Blyth
) of Australia using an Intel Core i7 2600k @ 3.40GHz with 8 GB RAM running Windows 7 Ultimate. Lee is a member of the Ishtar
For more details, please see the official announcement