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

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MnStatusDetails
2002387Factored
FactorDigitsBitsDate
4945760777511155074092168.72014-03-13 17:04:53
ECM
DigitsB1Curves
2550000280 / 280
30250000115 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Brian DohertyF89EEA8110CABEEF0
Verified (Factored)1999-01-29Stephen WoodF89EEA8110CABEEF465689
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-05Oliver Kruse2CC40F23B207A6621013
Verified2017-11-19kkmrkkblmbrbk2CC40F23B207A662135218413
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-11-19kkmrkkblmbrbkC-PRP
M2002387/494576077751115507409 : 2CC40F23B207A662
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M2002387/494576077751115507409 : 2CC40F23B207A662
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-03-13BloodIceF-ECM
Factor: 494576077751115507409
2014-03-08Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-03-08Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-03-08Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-03-08Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-03-08Never Odd Or EvenNF
no factor from 2^65 to 2^66
2014-01-01BloodIceNF
no factor from 2^64 to 2^65
2014-01-01BloodIceNF
no factor from 2^63 to 2^64
2013-10-07David CampeauNF-PM1
B1=580000, B2=15080000, E=12
2013-02-03dbaughNF
no factor from 2^62 to 2^63
2011-12-23Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-23JossNF-PM1
B1=200238
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61