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

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MnStatusDetails
155844589Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5315322548721740557168976872788.82024-09-06 02:16:30
P-1 factors
DateFactorB1B2
2024-09-0653153225487217405571689768712800001280000
History
DateUserTypeResult
2024-09-06Luke DurantF-PM1
Factor: 531532254872174055716897687 / (P-1, B1=1280000)
2024-08-15SRBaseNF
no factor from 2^75 to 2^76
2024-05-06GregNF
no factor from 2^68 to 2^69
2023-02-18SRBaseNF
no factor from 2^74 to 2^75
2021-11-15SRBaseNF
no factor from 2^73 to 2^74
2018-01-15treborNF
no factor from 2^72 to 2^73
2017-11-25treborNF
no factor from 2^71 to 2^72
2017-10-17treborNF
no factor from 2^70 to 2^71
2017-09-01La GüiraNF
no factor from 2^69 to 2^70
2016-10-20Josh FamestadNF
no factor from 2^68 to 2^69
2016-05-05rubikvn2100NF
no factor from 2^67 to 2^68
2015-04-12tjaehnsiNF
no factor from 2^66 to 2^67
2013-02-05Charles A. MorrisNF
no factor from 2^65 to 2^66
2011-01-24Charles A. MorrisNF
no factor from 2^64 to 2^65