Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
14209381Factored
FactorDigitsBitsDate
178727501338137012218472373.92017-08-22 08:17:17
419151576446230943614133532685.12017-08-22 08:17:16
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-04-20Lyle BergmanDC1A8AD570270C766300125
Bad2005-11-01Benedikt Pleie6E494D690960C9663130811
Verified (Factored)2006-04-14Shane SanfordDC1A8AD570270C762586739
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-10jeriffee834E65FFACDDD63D2175634453
P-1 factors
DateFactorB1B2
2017-08-22419151576446230943614133533000006000000
2017-08-22178727501338137012218473000006000000
History
DateUserTypeResult
2023-01-10FCG PrimesCERT
PRP Certification
Proof certified good
2023-01-10jeriffeeC-PRP
M14209381/41915157644623094361413353/17872750133813701221847 : 834E65FFACDDD63D
PRP proof power = 8
PRP: Verified
Proof certified good
2023-01-01nordiNF-PM1
B1=300000, B2=214790940
2022-10-31nordiNF-PM1
B1=300000
2017-08-22ThaF-PM1
Factor: 749139139401759791472161489390401970545921122991 / (P-1, B1=300000, B2=6000000, E=6)
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2015-08-28ThaNF
no factor from 2^66 to 2^67