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
207350573Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
19564309982845283703372270.72019-11-20 11:03:15
History
DateUserTypeResult
2025-05-03James HeinrichF
Factor: 1956430998284528370337 / TF: 70-71
2019-11-20NickF
Factor: 1956430998284528370337 / TF: 70-71
2019-01-28FairyNF
no factor from 2^69 to 2^70
2017-10-23daniel horacioNF
no factor from 2^68 to 2^69
2016-09-01ANONYMOUSNF
no factor from 2^67 to 2^68
2015-10-22ConductorNF
no factor from 2^66 to 2^67
2013-08-03tscNF
no factor from 2^65 to 2^66
2011-05-12RichardNF
no factor from 2^64 to 2^65