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

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MnStatusDetails
3376979Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
60785623825.9old
38159862711031.82008-09-07 19:48:45
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-05Oliver Kruse3E4832C206ACA0E02312247453
Verified2017-12-15kkmrkkblmbrbk3E4832C206ACA0E02323093453
History
DateUserTypeResult
2022-08-16JossNF-PM1
B1=3376979, B2=368560500
2022-01-03JossNF-PM1
B1=3376979, B2=111907950
2022-01-02JossNF-PM1
B1=3376979
2021-10-21JossNF
no factor from 2^67 to 2^68
2021-02-15JossNF-PM1
B1=337697, B2=7091655, E=6
2021-02-14JossNF-PM1
B1=337697, B2=3714676, E=6
2017-12-15kkmrkkblmbrbkC-PRP
M3376979/60785623/3815986271 : 3E4832C206ACA0E0
PRP: Verified
PRP without proof (not generated)
2017-11-05Oliver KruseC-PRP
M3376979/60785623/3815986271 : 3E4832C206ACA0E0
PRP: Verified
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 3815986271