Good for GIMPS, 2⁵⁷⁸⁸⁵¹⁶¹ - 1 has a nice ring to it! GIMPS is one of the largest distributed computations in the world and have been tooling away finding primes since 1996. SETI@Home gets most of the credit for popularizing this kind of distributed computing, but GIMPS has been at it for even longer and has delivered consistent results.