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

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MnStatusDetails
2232157Factored
FactorDigitsBitsDate
24018936137568350334892271.02020-04-05 11:38:32
ECM
DigitsB1Curves
2550000199 / 280
Estimated T-Level: 23.6
TF below 2^73 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Stephan Schaumann7CA9489C66D6A2ED0
Verified (Factored)1999-02-14Matti Kinnunen7CA9489C66D6A2ED1059596
Verified (Factored)2018-04-20kkmrkkblmbrbk7CA9489C66D6A2ED2219995
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-04-05Christoph Zenger931F1E2E4D4AD38B14005653
Verified2020-04-08Chang Chia-Tche931F1E2E4D4AD38B1176885053
History
DateUserTypeResult
2020-04-08Chang Chia-TcheC-PRP
M2232157/2401893613756835033489 : 931F1E2E4D4AD38B
PRP: Verified
PRP without proof (not generated)
2020-04-05Christoph ZengerC-PRP
M2232157/2401893613756835033489 : 931F1E2E4D4AD38B
PRP: Verified
PRP without proof (not generated)
2020-04-05nordiF-ECM
Factor: 2401893613756835033489 / (ECM curve 142, B1=50000, B2=5000000, Sigma=8271608308834332)
2019-04-15TJAOINF
no factor from 2^67 to 2^68
2018-04-20kkmrkkblmbrbkC-LL
7CA9489C66D6A2ED
2016-12-23Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-01-07Alexander DubrovinNF-PM1
B1=2000000, B2=65000000, E=12
2015-11-26Alexander DubrovinNF-PM1
B1=1300000, B2=11000000, E=12
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=142508
2014-05-26JossNF-PM1
B1=113754
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-04-20Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-13Oscar ÖstlinNF-PM1
B1=85000, B2=1615000, E=6
2010-10-26Oscar ÖstlinNF-PM1
B1=75011
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61