Marin Mersenne 2^P-1
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GIMPS
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MnDetails
251
Composite, with 4 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
50339.0old
54217515.7old
1782302872140632895112167.3old
616768821986952575013672375.7old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2018-01-24_p95holder_AA05FE26C852DCB41053
Factored
No proof (small exponent)
2024-09-06George WoltmanPRP_PRP_PRP_PRP_4013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRPM251/503/54217/178230287214063289511/61676882198695257501367
PRP Cofactor
2018-01-24_p95holder_C-PRPM251/503 : AA05FE26C852DCB4