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
7827931Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
11686787865771340.1old
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-05-21_p95holder_4A2E643C48D6C5BB1190537053
Verified2019-10-17kkmrkkblmbrbk4A2E643C48D6C5BB1735895353
History
DateUserTypeResult
2024-02-06Stef42NF-PM1
B1=859000, B2=1382772300
2019-10-17kkmrkkblmbrbkC-PRP
M7827931/1168678786577 : 4A2E643C48D6C5BB
PRP: Verified
PRP without proof (not generated)
2018-05-21_p95holder_C-PRP
M7827931/1168678786577 : 4A2E643C48D6C5BB
PRP: Verified
PRP without proof (not generated)