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
207438989Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4870125295743159942172168.72017-10-24 16:26:09
History
DateUserTypeResult
2025-03-23James HeinrichF
Factor: 487012529574315994217 / TF: 68-70
2017-10-24AlissonF
Factor: 487012529574315994217 / TF: 68-69
2016-09-02arnieNF
no factor from 2^67 to 2^68
2015-10-17ConductorNF
no factor from 2^66 to 2^67
2013-08-03Lukin DmitryNF
no factor from 2^65 to 2^66
2011-05-11sasaki3NF
no factor from 2^64 to 2^65