Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
413863Factored
FactorDigitsBitsDate
35685415722654732731961.62008-02-20 00:18:38
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski427B0
Verified (Factored)tom ehlert396F5B064C69427B0
Verified (Factored)Eivind Triel396F5B064C69427B205445
Verified (Factored)2002-02-24Dennis Pope396F5B064C69427B332193
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-23Oliver KruseC8BC32B30EAF18541013
Verified2017-11-02kkmrkkblmbrbkC8BC32B30EAF185415523013
Unverified (Reliable)2020-04-18Oliver KruseC32D78FD88C43A__127182553
History
DateUserTypeResult
2020-04-18Oliver KruseC-PRP
M413863/3568541572265473273 : C32D78FD88C43A__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-02kkmrkkblmbrbkC-PRP
M413863/3568541572265473273 : C8BC32B30EAF1854
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M413863/3568541572265473273 : C8BC32B30EAF1854
PRP: Unverified (Reliable)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=3000000, B2=100000000, E=12
2008-02-20Chad DavisF-ECM
Factor: 3568541572265473273