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
81516653Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
671837208689187374407132375.82025-09-13 19:14:28
LL
StatusDateUserResidueShift
Verified (Factored)2017-08-04curtisc74549DCC2036D40043471712
History
DateUserTypeResult
2025-09-13Sid & AndyF
Factor: 67183720868918737440713 / TF: 75-76
2017-08-04curtiscC-LL
74549DCC2036D400
2016-09-25TheJudgerNF-PM1
B1=715000, B2=13942500
2016-08-31AirSquirrelsNF
no factor from 2^74 to 2^75
2016-08-31AirSquirrelsNF
no factor from 2^73 to 2^74
2016-08-31AirSquirrelsNF
no factor from 2^72 to 2^73
2016-08-31AirSquirrelsNF
no factor from 2^71 to 2^72
2011-02-27UngelovendeNF
no factor from 2^70 to 2^71
2011-02-27UngelovendeNF
no factor from 2^69 to 2^70
2011-02-27UngelovendeNF
no factor from 2^68 to 2^69
2011-02-27UngelovendeNF
no factor from 2^67 to 2^68
2011-02-27UngelovendeNF
no factor from 2^65 to 2^67
2010-12-14Architects CubedNF
no factor from 2^64 to 2^65