Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnDetails
277
Composite, with 2 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
1121297720.1old
3113363630561020948220110905039240472138124.5old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2018-01-24_p95holder_PRP_PRP_PRP_PRP_2013
History
DateUserTypeResult
2018-01-24_p95holder_P-PRPM277/1121297/31133636305610209482201109050392404721
PRP Cofactor