Marin Mersenne 2^P-1
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MnStatusDetails
2236207Factored
FactorDigitsBitsDate
29024713419227653458072271.32020-02-24 05:30:17
ECM
DigitsB1Curves
2550000103 / 280
Estimated T-Level: 21.8 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ed KnaptonF970555B4A6EB2660
Verified (Factored)1999-03-15James J. OrleffF970555B4A6EB266194583
Verified (Factored)2018-04-21kkmrkkblmbrbkF970555B4A6EB2661571843
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-02-24Christoph Zenger993F5A5A2E4C914D141429653
Verified2020-02-26ANONYMOUS993F5A5A2E4C914D160899053
History
DateUserTypeResult
2020-02-26ANONYMOUSC-PRP
M2236207/2902471341922765345807 : 993F5A5A2E4C914D
PRP: Verified
PRP without proof (not generated)
2020-02-24Christoph ZengerC-PRP
M2236207/2902471341922765345807 : 993F5A5A2E4C914D
PRP: Verified
PRP without proof (not generated)
2020-02-24mnd9F-ECM
Factor: 2902471341922765345807 / (ECM curve 2, B1=50000, B2=5000000, Sigma=8197289690746204)
2019-04-08TJAOINF
no factor from 2^67 to 2^68
2018-04-21kkmrkkblmbrbkC-LL
F970555B4A6EB266
2016-12-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-01-09Alexander DubrovinNF-PM1
B1=2000000, B2=65000000, E=12
2015-12-01Alexander DubrovinNF-PM1
B1=1000000, B2=6000000, E=6
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-30JossNF-PM1
B1=142404
2014-06-01JossNF-PM1
B1=113702
2013-12-07Jerry HallettNF
no factor from 2^62 to 2^63
2012-04-27Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-14Oscar ÖstlinNF-PM1
B1=85000, B2=1615000, E=6
2010-11-07Oscar ÖstlinNF-PM1
B1=75011
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61