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

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MnStatusDetails
2418067Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
552866838891135.7old
ECM
DigitsB1Curves
2550000211 / 280
Estimated T-Level: 23.8
TF below 2^74 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-13Oliver KruseB238615C17995D2E178186153
Verified2017-11-27kkmrkkblmbrbkB238615C17995D2E113400653
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-27kkmrkkblmbrbkC-PRP
M2418067/55286683889 : B238615C17995D2E
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2418067/55286683889 : B238615C17995D2E
PRP: Verified
PRP without proof (not generated)