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

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MnStatusDetails
4734139Factored
FactorDigitsBitsDate
744346038587830416972066.02017-02-04 21:29:02
ECM
DigitsB1Curves
25500007 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-11Bob Simonoff949CA34F447E1FF80
Verified (Factored)2000-05-05Jesse Williamson949CA34F447E1FF8454746
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-19kkmrkkblmbrbk0ADC8C558D0CF23A1314844653
Verified2018-03-16Oliver Kruse0ADC8C558D0CF23A1392389853
History
DateUserTypeResult
2018-03-16Oliver KruseC-PRP
M4734139/74434603858783041697 : 0ADC8C558D0CF23A
PRP: Verified
PRP without proof (not generated)
2017-11-19kkmrkkblmbrbkC-PRP
M4734139/74434603858783041697 : 0ADC8C558D0CF23A
PRP: Verified
PRP without proof (not generated)
2017-02-04bamF-ECM
Factor: 74434603858783041697 / (ECM curve 1, B1=50000, B2=5000000)
2016-11-22Squeeky_SquirrelNF-PM1
B1=290000, B2=8700000, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-13snme2pm1NF
no factor from 2^65 to 2^66
2015-01-11VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-11VictordeHollanderNF
no factor from 2^63 to 2^64
2011-11-15Squeeky_SquirrelNF-PM1
B1=80000, B2=1360000, E=6
2011-10-25GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-06-09markrNF
no factor from 2^61 to 2^62
2009-08-23Carsten KossendeyNF-PM1
B1=25000, B2=387500