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

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MnStatusDetails
99663511Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2015015712768052651523073772787.42020-07-19 05:52:17
P-1 factors
DateFactorB1B2
2020-07-1920150157127680526515230737777500015306250
History
DateUserTypeResult
2020-07-19ky0urakuF-PM1
Factor: 201501571276805265152307377 / (P-1, B1=775000, B2=15306250, E=12)
2020-05-11TheJudgerNF
no factor from 2^76 to 2^77
2020-05-11TheJudgerNF
no factor from 2^75 to 2^76
2020-05-11TheJudgerNF
no factor from 2^74 to 2^75
2019-12-17RichD0NF
no factor from 2^73 to 2^74
2019-03-31Niels_Mache_NextcloudNF
no factor from 2^72 to 2^73
2017-02-14monstNF
no factor from 2^71 to 2^72
2014-05-18webbertNF
no factor from 2^70 to 2^71
2013-08-31PascalBieriNF
no factor from 2^69 to 2^70
2013-08-28processinfoNF
no factor from 2^68 to 2^69
2013-08-18RobishNF
no factor from 2^67 to 2^68
2013-08-16america64NF
no factor from 2^66 to 2^67
2012-09-12Jimmy BrüggemannNF
no factor from 2^65 to 2^66
2010-10-251997rj7NF
no factor from 2^64 to 2^65