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

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MnStatusDetails
2291659Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
41249863825.3old
906294460352101431756.32015-03-26 12:16:06
ECM
DigitsB1Curves
2550000187 / 280
Estimated T-Level: 23.3
TF below 2^73 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-11Oliver KruseEDFFC3DD9D1268B12013
Verified2017-11-22kkmrkkblmbrbkEDFFC3DD9D1268B12164945713
History
DateUserTypeResult
2017-11-22kkmrkkblmbrbkC-PRP
M2291659/41249863/90629446035210143 : EDFFC3DD9D1268B1
PRP: Verified
PRP without proof (not generated)
2017-10-11Oliver KruseC-PRP
M2291659/41249863/90629446035210143 : EDFFC3DD9D1268B1
PRP: Verified
PRP without proof (not generated)
2016-04-22alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-03-26TJAOIF
Factor: 90629446035210143 / TF: 56-57