Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2630093Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
920532551929.8old
28689260980311317031961.32016-04-19 11:08:48
ECM
DigitsB1Curves
255000075 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-17Oliver Kruse5EF78C71140A40A62143403353
Verified2017-12-02kkmrkkblmbrbk5EF78C71140A40A6295983953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-12-02kkmrkkblmbrbkC-PRP
M2630093/920532551/2868926098031131703 : 5EF78C71140A40A6
PRP: Verified
PRP without proof (not generated)
2017-10-17Oliver KruseC-PRP
M2630093/920532551/2868926098031131703 : 5EF78C71140A40A6
PRP: Verified
PRP without proof (not generated)
2016-04-19TJAOIF
Factor: 2868926098031131703 / TF: 61-62