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
2974999Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
832999721929.6old
27477883601233511651.32014-06-21 11:41:52
ECM
DigitsB1Curves
255000086 / 280
Estimated T-Level: 21.5
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-26Oliver Kruse33881F716D3C1F6E292533253
Verified2017-11-22storm551033881F716D3C1F6E229213553
History
DateUserTypeResult
2022-11-08Kevin_9611NF-PM1
B1=400000, B2=57609090
2017-11-22storm5510C-PRP
M2974999/832999721/2747788360123351 : 33881F716D3C1F6E
PRP: Verified
PRP without proof (not generated)
2017-10-26Oliver KruseC-PRP
M2974999/832999721/2747788360123351 : 33881F716D3C1F6E
PRP: Verified
PRP without proof (not generated)
2014-06-21TJAOIF
Factor: 2747788360123351