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
202270171Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2252547999187794232972167.62015-09-26 17:55:07
History
DateUserTypeResult
2015-09-26demfloroF
Factor: 225254799918779423297 / TF: 66-68
2013-07-20zampelNF
no factor from 2^65 to 2^66
2011-05-02Charles A. MorrisNF
no factor from 2^64 to 2^65