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

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MnStatusDetails
2992939Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
29929391824.8old
1047492077781889511856.52015-04-10 11:45:42
ECM
DigitsB1Curves
255000047 / 280
Estimated T-Level: 20.8
TF below 2^64 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-27Oliver KruseDD020389D16071F02266876153
Verified2017-12-10kkmrkkblmbrbkDD020389D16071F0228434753
History
DateUserTypeResult
2023-02-27USAFSSNF-PM1
B1=360000, B2=292297830
2017-12-10kkmrkkblmbrbkC-PRP
M2992939/29929391/104749207778188951 : DD020389D16071F0
PRP: Verified
PRP without proof (not generated)
2017-10-27Oliver KruseC-PRP
M2992939/29929391/104749207778188951 : DD020389D16071F0
PRP: Verified
PRP without proof (not generated)
2015-04-10TJAOIF
Factor: 104749207778188951 / TF: 56-57