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
2461297Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
216594137927.7old
ECM
DigitsB1Curves
2550000119 / 280
Estimated T-Level: 22.1
TF below 2^68 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-13Oliver Kruse0443C6EEDF56720C171991553
Verified2017-11-29kkmrkkblmbrbk0443C6EEDF56720C1197060553
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-29kkmrkkblmbrbkC-PRP
M2461297/216594137 : 0443C6EEDF56720C
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2461297/216594137 : 0443C6EEDF56720C
PRP: Verified
PRP without proof (not generated)