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

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MnStatusDetails
2976053Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
541641647929.0old
44997921371032.12008-09-07 19:43:14
35237873651652109191961.62016-05-13 11:22:32
ECM
DigitsB1Curves
255000070 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-03-23LOBES4B6195AB6099765983686313
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-26Oliver Kruse4B6195AB60997659345317953
Verified2017-12-09kkmrkkblmbrbk4B6195AB60997659328909053
History
DateUserTypeResult
2025-03-23ChuckCERT
PRP Certification
CERT proof power = 7
Proof certified good
2025-03-23LOBESC-PRP
4B6195AB60997659
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2023-02-21USAFSSNF-PM1
B1=360000, B2=298405800
2017-12-09kkmrkkblmbrbkC-PRP
M2976053/541641647/4499792137/3523787365165210919 : 4B6195AB60997659
PRP: Verified
PRP without proof (not generated)
2017-10-26Oliver KruseC-PRP
M2976053/541641647/4499792137/3523787365165210919 : 4B6195AB60997659
PRP: Verified
PRP without proof (not generated)
2016-05-13TJAOIF
Factor: 3523787365165210919 / TF: 61-62
2008-09-07Will EdgingtonF
Factor: 4499792137