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
2696861Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
44011477026731342.0old
ECM
DigitsB1Curves
255000058 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-19Oliver Kruse5949C6FAE022D31E1212619853
Verified2017-12-04kkmrkkblmbrbk5949C6FAE022D31E1125075953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-12-04kkmrkkblmbrbkC-PRP
M2696861/4401147702673 : 5949C6FAE022D31E
PRP: Verified
PRP without proof (not generated)
2017-10-19Oliver KruseC-PRP
M2696861/4401147702673 : 5949C6FAE022D31E
PRP: Verified
PRP without proof (not generated)