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
153911573Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
565955947877603709193912375.62024-08-10 06:11:28
History
DateUserTypeResult
2025-06-06GregF
Factor: 56595594787760370919391 / TF: 75-76
2024-08-10SRBaseF
Factor: 56595594787760370919391 / TF: 75-76*
2023-02-14SRBaseNF
no factor from 2^74 to 2^75
2021-11-14SRBaseNF
no factor from 2^73 to 2^74
2018-06-02Oliver KruseNF
no factor from 2^72 to 2^73
2018-05-21roemer2201NF
no factor from 2^71 to 2^72
2017-11-13Oliver KruseNF
no factor from 2^70 to 2^71
2015-05-10La GüiraNF
no factor from 2^69 to 2^70
2015-05-10La GüiraNF
no factor from 2^68 to 2^69
2015-05-10La GüiraNF
no factor from 2^67 to 2^68
2015-04-06MagnusGNF
no factor from 2^66 to 2^67
2013-01-28prgamma10NF
no factor from 2^65 to 2^66
2011-01-20runeskNF
no factor from 2^64 to 2^65
2010-06-25Charles A. MorrisNF
no factor from 2^63 to 2^64