Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
42643801Mersenne Prime!
LL
StatusDateUserResidueShift
Verified2009-04-12stigmv00000000000000001905212
History
DateUserTypeResult
2009-06-10Carsten KossendeyNF-PM1
B1=1000000, B2=100000000, E=6
2009-06-09starrynteNF-PM1
B1=715001, B2=12000000
2009-06-07unconnectedNF
no factor from 2^70 to 2^71
2009-06-06unconnectedNF
no factor from 2^69 to 2^70
2009-06-06unconnectedNF
no factor from 2^68 to 2^69
2009-04-12stigmvP-LL
M42643801 is prime!
2009-03-15stigmvNF-PM1
B1=715000