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
28878341Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
85479889371033.0old
13789262280661371650.32014-05-23 11:50:52
History
DateUserTypeResult
2024-06-09masserNF
no factor from 2^68 to 2^69
2014-05-23TJAOIF
Factor: 1378926228066137