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

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MnStatusDetails
77090119Factored
FactorDigitsBitsDate
386381760580625789400012375.02015-05-06 21:36:17
P-1 factors
DateFactorB1B2
2015-05-063863817605806257894000171000013667500
History
DateUserTypeResult
2015-05-06ixfd64F-PM1
Factor: 38638176058062578940001 / (P-1, B1=710000, B2=13667500)
2014-09-10ChuckNF
no factor from 2^73 to 2^74
2014-09-10ChuckNF
no factor from 2^72 to 2^73
2014-09-10ChuckNF
no factor from 2^71 to 2^72
2012-12-30Oscar GNF
no factor from 2^70 to 2^71
2010-11-08egwinNF
no factor from 2^69 to 2^70
2010-10-05John RNF
no factor from 2^68 to 2^69
2010-10-03jwdenneyNF
no factor from 2^67 to 2^68
2010-09-27Razor_FX_IINF
no factor from 2^66 to 2^67
2010-09-25DjohnnieNF
no factor from 2^65 to 2^66
2008-06-11George WoltmanNF
no factor to 2^65