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
2893489Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
594901338411135.8old
ECM
DigitsB1Curves
255000098 / 280
Estimated T-Level: 21.8
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-23Oliver Kruse2D445A55BB76A5F11231867653
Verified2017-12-08kkmrkkblmbrbk2D445A55BB76A5F11156468453
History
DateUserTypeResult
2022-12-02USAFSSNF-PM1
B1=320000, B2=243437040
2017-12-08kkmrkkblmbrbkC-PRP
M2893489/59490133841 : 2D445A55BB76A5F1
PRP: Verified
PRP without proof (not generated)
2017-10-23Oliver KruseC-PRP
M2893489/59490133841 : 2D445A55BB76A5F1
PRP: Verified
PRP without proof (not generated)