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

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Exponent Range:










MnStatusDetails
1653287Factored
FactorDigitsBitsDate
521058588672409082471121787692995.42018-08-12 10:05:53
ECM
DigitsB1Curves
2550000280 / 280
30250000130 / 640
Estimated T-Level: 26.0
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Alex and Nick MyrmanCAA0
Verified (Factored)Brian J. Beesley7E1185BBD8DD4CAA0
Verified (Factored)1998-02-01MIT Prime Team7E1185BBD8DD4CAA0
Verified (Factored)2015-11-13MadPoo7E1185BBD8DD4CAA828972
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-08-12ATH9E78360A467E97691131092353
Verified2018-08-14Ruzovej9E78360A467E9769142395653
P-1 factors
DateFactorB1B2
2018-08-12521058588672409082471121787698000000400000000
History
DateUserTypeResult
2018-08-14RuzovejC-PRP
M1653287/52105858867240908247112178769 : 9E78360A467E9769
PRP: Verified
PRP without proof (not generated)
2018-08-12ATHC-PRP
M1653287/52105858867240908247112178769 : 9E78360A467E9769
PRP: Verified
PRP without proof (not generated)
2018-08-12mikrF-PM1
Factor: 52105858867240908247112178769 / (P-1, B1=8000000, B2=400000000, E=12)
2018-03-30JossNF-PM1
B1=1653287, B2=165328700, E=12
2018-02-18JossNF-PM1
B1=1653287, B2=80000000, E=12
2018-02-08JossNF-PM1
B1=1653287, B2=40000000, E=12
2018-02-08JossNF-PM1
B1=1653287, B2=20000000, E=12
2017-12-24JossNF-PM1
B1=2000000, B2=20000000, E=12
2017-10-20TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-13MadPooC-LL
7E1185BBD8DD4CAA
2015-10-11ramgeisNF
no factor from 2^65 to 2^66
2015-05-08monstNF
no factor from 2^64 to 2^65
2015-05-08omylistNF
no factor from 2^63 to 2^64
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
2010-08-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-29Architects CubedNF
no factor from 2^60 to 2^61