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

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MnStatusDetails
1816729Factored
FactorDigitsBitsDate
1491049036396511806115292477.02017-11-22 11:44:03
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)Michael J. Kilfoyle355D4DD8C3B62E080
Verified (Factored)1998-12-06Utz-Uwe Haus355D4DD8C3B62E08574220
Verified (Factored)2015-07-10MadPoo355D4DD8C3B62E081501180
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-23Oliver Kruse035E7B4033722C5B186988553
Verified2017-11-23ATH035E7B4033722C5B168845553
History
DateUserTypeResult
2017-11-23ATHC-PRP
M1816729/149104903639651180611529 : 035E7B4033722C5B
PRP: Verified
PRP without proof (not generated)
2017-11-23Oliver KruseC-PRP
M1816729/149104903639651180611529 : 035E7B4033722C5B
PRP: Verified
PRP without proof (not generated)
2017-11-22bamF-ECM
Factor: 149104903639651180611529 / (ECM curve 3, B1=50000, B2=5000000)
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-09-02ramgeisNF
no factor from 2^65 to 2^66
2015-07-10MadPooC-LL
355D4DD8C3B62E08
2015-05-25mikrNF-PM1
B1=2780000, B2=91760000, E=12
2015-04-24snme2pm1NF
no factor from 2^64 to 2^65
2015-04-24snme2pm1NF
no factor from 2^63 to 2^64
2014-09-22JossNF-PM1
B1=170660
2014-05-13JossNF-PM1
B1=135330
2011-02-07Carsten KossendeyNF-PM1
B1=100000, B2=1650000, E=6
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-18Architects CubedNF
no factor from 2^60 to 2^61