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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MnStatusDetails
7860823Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
18151841292970927611960.7old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-05-30_p95holder_5A5A8649CD6930881674094053
Verified2019-10-29kkmrkkblmbrbk5A5A8649CD6930881465803153
History
DateUserTypeResult
2024-01-31Stef42NF-PM1
B1=950000, B2=1968826860
2019-10-29kkmrkkblmbrbkC-PRP
M7860823/1815184129297092761 : 5A5A8649CD693088
PRP: Verified
PRP without proof (not generated)
2018-05-30_p95holder_C-PRP
M7860823/1815184129297092761 : 5A5A8649CD693088
PRP: Verified
PRP without proof (not generated)