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
2472719Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
134318096091133.6old
496702021387455771755.52015-01-26 11:28:43
ECM
DigitsB1Curves
2550000160 / 280
Estimated T-Level: 22.9
TF below 2^71 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-14Oliver Kruse3332C056553EA6F922955753
Verified2017-11-29ATH3332C056553EA6F92131148053
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-29ATHC-PRP
M2472719/13431809609/49670202138745577 : 3332C056553EA6F9
PRP: Verified
PRP without proof (not generated)
2017-10-14Oliver KruseC-PRP
M2472719/13431809609/49670202138745577 : 3332C056553EA6F9
PRP: Verified
PRP without proof (not generated)
2015-01-26TJAOIF
Factor: 49670202138745577 / TF: 55-56