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
8330557
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
421859406491135.3old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-12Chang Chia-Tche13D56887F9D2D7A41789324453
Verified
PRP without proof (not generated)
2020-04-22marssystems13D56887F9D2D7A41198211853
History
DateUserTypeResult
2024-05-10Stef42NF-PM1B1=1025000, B2=1519818300
2020-04-22marssystemsC-PRPM8330557/42185940649 : 13D56887F9D2D7A4
2018-10-12Chang Chia-TcheC-PRPM8330557/42185940649 : 13D56887F9D2D7A4