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

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MnDetails
23
Composite, with 1 known prime factor. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
4725.6old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2018-01-24_p95holder_PRP_PRP_PRP_PRP_1013
History
DateUserTypeResult
2021-12-27-anonymous-NF-PM1B1=1000000, B2=100000000
2018-01-24_p95holder_P-PRPM23/47
PRP Cofactor