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

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MnStatusDetails
2694677Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
59229000471032.5old
2888610496966184231858.02015-08-03 11:15:35
ECM
DigitsB1Curves
255000074 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30alpertron9159C7A4281365D32013
Verified2017-11-15Oliver Kruse9159C7A4281365D3211460013
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-15Oliver KruseC-PRP
M2694677/5922900047/288861049696618423 : 9159C7A4281365D3
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2694677/288861049696618423/5922900047 : 9159C7A4281365D3
PRP: Verified
PRP without proof (not generated)
2015-08-03TJAOIF
Factor: 288861049696618423 / TF: 58-59