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
203906749Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
1334673364251567373212166.92015-10-01 09:14:35
2389196032171732247932167.72023-02-14 09:53:08
History
DateUserTypeResult
2023-02-14TJAOIF
Factor: 238919603217173224793 / TF: 67-68
2015-10-01ConductorF
Factor: 133467336425156737321 / TF: 66-67
2013-07-23Lukin DmitryNF
no factor from 2^65 to 2^66
2011-05-05Charles A. MorrisNF
no factor from 2^64 to 2^65