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
207215761Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1081655058135096332332166.62015-10-14 11:14:38
History
DateUserTypeResult
2015-10-14ConductorF
Factor: 108165505813509633233 / TF: 66-67
2013-08-09-Anonymous-NF
no factor from 2^65 to 2^66
2011-05-12RichardNF
no factor from 2^64 to 2^65