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
3431537Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
20589223824.3old
5836907175531239.12008-09-07 19:49:10
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
Verified2017-11-06Oliver KruseE0ACB5E2C4894DF52284633953
Verified2017-12-16kkmrkkblmbrbkE0ACB5E2C4894DF52329150953
History
DateUserTypeResult
2022-02-23JossNF-PM1
B1=1000000, B2=127313550
2021-10-11JossNF
no factor from 2^67 to 2^68
2021-03-16JossNF-PM1
B1=343153, B2=7206227, E=6
2021-03-16JossNF-PM1
B1=343153, B2=3774690, E=6
2017-12-16kkmrkkblmbrbkC-PRP
M3431537/20589223/583690717553 : E0ACB5E2C4894DF5
PRP: Verified
PRP without proof (not generated)
2017-11-06Oliver KruseC-PRP
M3431537/20589223/583690717553 : E0ACB5E2C4894DF5
PRP: Verified
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 583690717553