Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
853661381Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
217661785323341773946392374.22024-06-18 07:38:32
History
DateUserTypeResult
2025-05-16GregF
Factor: 21766178532334177394639 / TF: 74-75
2024-06-18SRBaseF
Factor: 21766178532334177394639 / TF: 74-75*
2022-12-05SRBaseNF
no factor from 2^73 to 2^74
2021-06-12SRBaseNF
no factor from 2^72 to 2^73
2020-10-13SRBaseNF
no factor from 2^71 to 2^72
2019-03-27srow7NF
no factor from 2^70 to 2^71
2016-12-17ramgeisNF
no factor from 2^68 to 2^70
2015-08-27sasakiNF
no factor from 2^67 to 2^68
2015-03-02sasakiNF
no factor from 2^66 to 2^67
2013-08-09Le ComteNF
no factor from 2^65 to 2^66
2010-10-18Architects CubedNF
no factor from 2^64 to 2^65
2010-04-15Architects CubedNF
no factor from 2^63 to 2^64