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

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MnStatusDetails
161505887Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
915209598732016503155692376.32025-09-14 08:49:55
History
DateUserTypeResult
2025-09-14GregF
Factor: 91520959873201650315569 / TF: 76-78
2024-09-01SRBaseNF
no factor from 2^75 to 2^76
2023-03-18SRBaseNF
no factor from 2^74 to 2^75
2019-06-19La GüiraNF
no factor from 2^73 to 2^74
2019-06-19La GüiraNF
no factor from 2^72 to 2^73
2018-12-16ZenghuiNF
no factor from 2^71 to 2^72
2018-06-26ZenghuiNF
no factor from 2^70 to 2^71
2018-06-06proxy2222NF
no factor from 2^69 to 2^70
2017-03-30yangyiNF
no factor from 2^68 to 2^69
2016-03-23XZTNF
no factor from 2^67 to 2^68
2015-05-07Akatosh9NF
no factor from 2^66 to 2^67
2013-02-26Chih-Wei HuangNF
no factor from 2^65 to 2^66
2011-02-06RichardNF
no factor from 2^64 to 2^65
2010-07-06frigoNF
no factor from 2^63 to 2^64