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
4673077Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
328780407335111444.9old
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkB68EA6E7647AC5981013
Verified2018-03-06treborB68EA6E7647AC5981360525113
History
DateUserTypeResult
2023-08-28USAFSSNF-PM1
B1=240000, B2=91991760
2018-03-06treborC-PRP
M4673077/32878040733511 : B68EA6E7647AC598
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4673077/32878040733511 : B68EA6E7647AC598
PRP: Verified
PRP without proof (not generated)