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
8391919
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
154659039048891443.8old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-21storm5510920C4855AB20B5261752120053
Verified
PRP without proof (not generated)
2020-05-17arnaud920C4855AB20B5261731511053
History
DateUserTypeResult
2024-05-12Stef42NF-PM1B1=1025000, B2=1053971100
2020-05-17arnaudC-PRPM8391919/15465903904889 : 920C4855AB20B526
2018-10-21storm5510C-PRPM8391919/15465903904889 : 920C4855AB20B526