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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
6994577Factored
FactorDigitsBitsDate
393199458159766964077321192685.02021-11-05 21:35:33
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2000-01-19Duane M. Heller55400D457E6FB8EC3398308
Bad2002-01-08Viktor JuhaszF4094CA863830A923164992
Verified (Factored)2002-09-22Shane Sanford55400D457E6FB8EC6666539
Verified (Factored)2002-11-02Brian Little55400D457E6FB8EC2557873
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-11-11Luminescence5C0ACA4D9589E9BE1554014653
P-1 factors
DateFactorB1B2
2021-11-053931994581597669640773211920000002000000
History
DateUserTypeResult
2021-11-11Ben DeloCERT
PRP Certification
Proof certified good
2021-11-11LuminescenceC-PRP
M6994577/39319945815976696407732119 : 5C0ACA4D9589E9BE
PRP proof power = 8
PRP: Verified
Proof certified good
2021-11-05Seth_TrF-PM1
Factor: 39319945815976696407732119 / (P-1, B1=2000000)
2021-10-13SRBaseNF
no factor from 2^71 to 2^72
2020-09-20takahashiNF
no factor from 2^70 to 2^71
2020-07-26takahashiNF
no factor from 2^69 to 2^70
2020-04-03TJAOINF
no factor from 2^68 to 2^69
2018-02-25-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-27Gordon SpenceNF
no factor from 2^66 to 2^67
2015-07-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-14lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-09-08Carsten KossendeyNF-PM1
B1=445000, B2=13683750, E=12