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

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MnStatusDetails
72661607Factored
FactorDigitsBitsDate
7211944722542535799100172479.32015-08-18 17:11:57
P-1 factors
DateFactorB1B2
2015-08-1872119447225425357991001762000011470000
History
DateUserTypeResult
2015-08-18Jwb52zF-PM1
Factor: 721194472254253579910017 / (P-1, B1=620000, B2=11470000)
2015-08-16Guido LorenziniNF
no factor from 2^74 to 2^75
2015-08-16Guido LorenziniNF
no factor from 2^73 to 2^74
2015-08-16Guido LorenziniNF
no factor from 2^72 to 2^73
2015-03-121997rj7NF
no factor from 2^71 to 2^72
2013-04-19Houd Al-ObaidliNF
no factor from 2^70 to 2^71
2012-11-21Robert_SoCalNF
no factor from 2^69 to 2^70
2010-05-27seekuaNF
no factor from 2^68 to 2^69
2010-05-24Kevin BrushNF
no factor from 2^67 to 2^68
2010-05-23Kevin BrushNF
no factor from 2^66 to 2^67
2010-05-23GrunwalderGIMPNF
no factor from 2^65 to 2^66
2010-05-22GrunwalderGIMPNF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64