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
8405587
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
806936353929.6old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-24storm5510228447BE27B228421263648953
Verified
PRP without proof (not generated)
2020-05-21daveward2005228447BE27B228421410784653
History
DateUserTypeResult
2024-05-12Stef42NF-PM1B1=1025000, B2=2213224650
2020-05-21daveward2005C-PRPM8405587/806936353 : 228447BE27B22842
2018-10-24storm5510C-PRPM8405587/806936353 : 228447BE27B22842