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

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MnStatusDetails
72712529Factored
FactorDigitsBitsDate
81240352769251604195633272582.72015-08-22 15:05:42
P-1 factors
DateFactorB1B2
2015-08-2281240352769251604195633276200000
History
DateUserTypeResult
2015-08-22Massimo Cappelli (ik5pwa)F-PM1
Factor: 8124035276925160419563327 / (P-1, B1=620000)
2015-08-17GregNF
no factor from 2^74 to 2^75
2015-08-17GregNF
no factor from 2^73 to 2^74
2015-08-17GregNF
no factor from 2^72 to 2^73
2015-03-14el groccoNF
no factor from 2^71 to 2^72
2013-04-20cavejohnson44NF
no factor from 2^70 to 2^71
2012-10-06RonnyKarlNF
no factor from 2^69 to 2^70
2010-06-05Aldo_GridNF
no factor from 2^68 to 2^69
2010-05-31arnaudNF
no factor from 2^67 to 2^68
2010-05-27Jim BlaschakNF
no factor from 2^66 to 2^67
2010-05-21Kevin BrushNF
no factor from 2^65 to 2^66
2010-05-21-Anonymous-NF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64