Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
77863831Factored
FactorDigitsBitsDate
558611884685019618677992375.62016-08-03 15:46:41
P-1 factors
DateFactorB1B2
2016-08-03558611884685019618677996550000
History
DateUserTypeResult
2016-08-03Sergey NosovF-PM1
Factor: 55861188468501961867799 / (P-1, B1=655000)
2016-05-15AirSquirrelsNF
no factor from 2^74 to 2^75
2016-05-15AirSquirrelsNF
no factor from 2^73 to 2^74
2016-05-04Matthias WurtingerNF
no factor from 2^72 to 2^73
2016-01-201997rj7NF
no factor from 2^71 to 2^72
2013-01-09Bold_SeekerNF
no factor from 2^70 to 2^71
2011-01-03Thomas LeplusNF
no factor from 2^69 to 2^70
2010-12-18Torchwood InstituteNF
no factor from 2^68 to 2^69
2010-12-13andrea.biancalanaNF
no factor from 2^67 to 2^68
2010-10-05lindedNF
no factor from 2^66 to 2^67
2010-09-27eon_blue_apocalypseNF
no factor from 2^65 to 2^66
2008-10-29JohnHa0NF
no factor to 2^65