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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MnDetails
7928581
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
20297167371030.9old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-06-08storm5510DA6312E39670594D1122759653
Verified
PRP without proof (not generated)
2019-11-26Luigi MorelliDA6312E39670594D1636714853
History
DateUserTypeResult
2024-02-05Stef42NF-PM1B1=950000, B2=1968826860
2019-11-26Luigi MorelliC-PRPM7928581/2029716737 : DA6312E39670594D
2018-06-08storm5510C-PRPM7928581/2029716737 : DA6312E39670594D