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
207245671Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
915157662754905241372066.32015-10-19 18:31:20
History
DateUserTypeResult
2015-10-19ConductorF
Factor: 91515766275490524137 / TF: 66-67
2013-08-04carlos56NF
no factor from 2^65 to 2^66
2011-05-10Charles A. MorrisNF
no factor from 2^64 to 2^65