PrimeGrid Mega Prime found for The Riesel Problem

[Free-DC]

On 8 May 2011 7:29:52 UTC, PrimeGrid’s The Riesel Problem project eliminated k=123547 by finding the Mega prime: 123547*2^3804809-1 (http://primes.utm.edu/primes/page.php?id=100051)The prime is 1,145,367 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 28th overall. This is the largest prime found in The Riesel Problem and PrimeGrid's fourth elimination. 60 k's now remain.The discovery was made by <b>Jakub

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