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
207129719Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1270882712076664077612166.82015-10-07 09:11:10
History
DateUserTypeResult
2015-10-07ConductorF
Factor: 127088271207666407761 / TF: 66-67
2013-09-06riccardo ubertiNF
no factor from 2^65 to 2^66
2011-05-10sannerud.comNF
no factor from 2^64 to 2^65