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

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MnStatusDetails
2862359Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
34176566471031.7old
16980944767511340.62008-09-30 14:38:13
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
Verified2017-10-22Oliver KruseA4E8F2C485570DFC2124859053
Verified2017-12-07kkmrkkblmbrbkA4E8F2C485570DFC2190962853
History
DateUserTypeResult
2022-11-21USAFSSNF-PM1
B1=255000, B2=195390690
2017-12-07kkmrkkblmbrbkC-PRP
M2862359/3417656647/1698094476751 : A4E8F2C485570DFC
PRP: Verified
PRP without proof (not generated)
2017-10-22Oliver KruseC-PRP
M2862359/3417656647/1698094476751 : A4E8F2C485570DFC
PRP: Verified
PRP without proof (not generated)
2008-09-30markrF
Factor: 1698094476751