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
1249151Factored
FactorDigitsBitsDate
464314161233602392610572375.32013-09-06 02:51:54
ECM
DigitsB1Curves
2550000280 / 280
30250000104 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski9F70
Verified (Factored)Jean-Yves CanartCDCF477E9FB9A9F70
Verified (Factored)2002-08-17S57483CDCF477E9FB9A9F7322363
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29Oliver KruseDDF870B22739C1461013
Verified2017-10-20kkmrkkblmbrbkDDF870B22739C146110083213
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2017-10-20kkmrkkblmbrbkC-PRP
M1249151/46431416123360239261057 : DDF870B22739C146
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1249151/46431416123360239261057 : DDF870B22739C146
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=300000, B2=10000000, E=12
2013-09-06jim f in mnF-ECM
Factor: 46431416123360239261057
2012-10-07dbaughNF
no factor from 2^62 to 2^63
2011-05-09XyzzyNF
no factor from 2^61 to 2^62
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61