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
3738047Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
887337596871136.4old
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
Verified2017-09-20kkmrkkblmbrbkA85CAD502EC1B28A1013
Verified2017-12-03Oliver KruseA85CAD502EC1B28A1250828113
History
DateUserTypeResult
2022-05-31JossNF-PM1
B1=100000, B2=130364850
2022-03-22JossNF-PM1
B1=100000
2022-03-03JossNF-PM1
B1=90000
2017-12-03Oliver KruseC-PRP
M3738047/88733759687 : A85CAD502EC1B28A
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M3738047/88733759687 : A85CAD502EC1B28A
PRP: Verified
PRP without proof (not generated)