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
207412193Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1255113161554576865512166.82015-10-19 09:47:59
History
DateUserTypeResult
2015-10-19ConductorF
Factor: 125511316155457686551 / TF: 66-68
2013-08-03Lukin DmitryNF
no factor from 2^65 to 2^66
2011-05-11Mr-PlonkNF
no factor from 2^64 to 2^65