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
7940771Factored
FactorDigitsBitsDate
670568710032718652632065.92015-06-03 12:25:46
ECM
DigitsB1Curves
25500003 / 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)1999-09-22Takashi Satomi193F2B4DA85227FE90732
Verified (Factored)2002-07-06Stephen Wood193F2B4DA85227FE1231535
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-06-12Daniil TsarkovBDB7892153463EE61587982053
Verified2019-11-28ATHBDB7892153463EE61771913253
History
DateUserTypeResult
2019-11-28ATHC-PRP
M7940771/67056871003271865263 : BDB7892153463EE6
PRP: Verified
PRP without proof (not generated)
2018-06-12Daniil TsarkovC-PRP
M7940771/67056871003271865263 : BDB7892153463EE6
PRP: Verified
PRP without proof (not generated)
2015-06-03VictordeHollanderF
Factor: 67056871003271865263 / TF: 65-66
2013-12-21David CampeauNF
no factor from 2^64 to 2^65
2013-10-02NesowaNF
no factor from 2^63 to 2^64
2012-06-25firejugglerNF-PM1
B1=100000, B2=1950000, E=6