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
8331181
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
49987087825.6old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-13Oliver Kruse395DFEF4845378DA1606382153
Verified
PRP without proof (not generated)
2020-04-23GAN395DFEF4845378DA128143353
History
DateUserTypeResult
2024-05-10Stef42NF-PM1B1=1025000, B2=1519818300
2020-04-23GANC-PRP
M8331181/49987087 : 395DFEF4845378DA
2018-10-13Oliver KruseC-PRP
M8331181/49987087 : 395DFEF4845378DA