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
556042483Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
42176328820413077135212271.82020-01-31 03:24:03
History
DateUserTypeResult
2025-04-06James HeinrichF
Factor: 4217632882041307713521 / TF: 71-72
2020-01-31Smok_bmv F
Factor: 4217632882041307713521 / TF: 71-72*
2019-11-26sasakiNF
no factor from 2^70 to 2^71
2018-11-02Niels_Mache_NextcloudNF
no factor from 2^69 to 2^70
2018-03-16sasakiNF
no factor from 2^68 to 2^69
2016-12-04sasakiNF
no factor from 2^67 to 2^68
2015-11-26sasakiNF
no factor from 2^66 to 2^67
2014-09-11sasakiNF
no factor from 2^65 to 2^66
2011-11-27Architects CubedNF
no factor from 2^64 to 2^65