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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Exponent Range:





MnDetails
7811861
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
28438298784411341.4old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-05-14storm5510C4581C1AE2877EF61715897853
Verified
PRP without proof (not generated)
2019-10-11G.de GrootC4581C1AE2877EF6190333353
History
DateUserTypeResult
2024-01-31Stef42NF-PM1B1=843000, B2=1382772300
2019-10-11G.de GrootC-PRPM7811861/2843829878441 : C4581C1AE2877EF6
2018-05-14storm5510C-PRPM7811861/2843829878441 : C4581C1AE2877EF6