Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
1670813Factored
FactorDigitsBitsDate
3568044121405235953212168.32013-03-25 20:58:17
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 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)Phil GibbsD55258C205D11F330
Verified (Factored)1998-12-13Paul Victor NovareseD55258C205D11F331321932
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-02Oliver KruseD9D9DD1C3D1A938E1013
Verified2017-11-02ATHD9D9DD1C3D1A938E187473713
History
DateUserTypeResult
2017-11-02ATHC-PRP
M1670813/356804412140523595321 : D9D9DD1C3D1A938E
PRP: Verified
PRP without proof (not generated)
2017-10-02Oliver KruseC-PRP
M1670813/356804412140523595321 : D9D9DD1C3D1A938E
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2013-03-25Chang Chia-TcheF-ECM
Factor: 356804412140523595321
2012-03-01AxonNF-PM1
B1=1000000, B2=20000000, E=12
2012-03-01AxonNF-PM1
B1=1000000, B2=8000000, E=12
2012-02-29AxonNF-PM1
B1=1000000
2012-02-29AxonNF-PM1
B1=900000
2012-02-29AxonNF-PM1
B1=800000
2012-02-29AxonNF-PM1
B1=700000
2012-02-29AxonNF-PM1
B1=600000
2012-02-29AxonNF-PM1
B1=500000
2012-02-29AxonNF-PM1
B1=400000
2012-02-29AxonNF-PM1
B1=300000
2012-02-29AxonNF-PM1
B1=200000
2012-02-29AxonNF-PM1
B1=100000
2010-08-31GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-25Architects CubedNF
no factor from 2^60 to 2^61