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
7940663Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
8255003657292834231859.5old
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-06-13Daniil TsarkovE8EAAFD4DBC936521363818753
Verified2019-11-28ATHE8EAAFD4DBC936521390363653
History
DateUserTypeResult
2024-02-06Stef42NF-PM1
B1=950000, B2=1968826860
2019-11-28ATHC-PRP
M7940663/825500365729283423 : E8EAAFD4DBC93652
PRP: Verified
PRP without proof (not generated)
2018-06-13Daniil TsarkovC-PRP
M7940663/825500365729283423 : E8EAAFD4DBC93652
PRP: Verified
PRP without proof (not generated)