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

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MnStatusDetails
7144201Factored
FactorDigitsBitsDate
260955565340370476957532374.52017-10-12 02:55:26
ECM
DigitsB1Curves
25500004 / 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)1999-05-16Jason SlemonsD794B4DB9850AAA85728051
Verified (Factored)2002-02-24Peter BensonD794B4DB9850AAA8673245
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-02-14Oliver Kruse2B60343B69E0263D1577280453
Verified2019-03-25kkmrkkblmbrbk2B60343B69E0263D1395504153
History
DateUserTypeResult
2019-03-25kkmrkkblmbrbkC-PRP
M7144201/26095556534037047695753 : 2B60343B69E0263D
PRP: Verified
PRP without proof (not generated)
2018-02-14Oliver KruseC-PRP
M7144201/26095556534037047695753 : 2B60343B69E0263D
PRP: Verified
PRP without proof (not generated)
2017-10-12bamF-ECM
Factor: 26095556534037047695753 / (ECM curve 1, B1=50000, B2=5000000)
2016-10-23Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-21VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-06lycornNF
no factor from 2^64 to 2^65
2014-02-02NesowaNF
no factor from 2^63 to 2^64
2011-12-22James HeinrichNF-PM1
B1=135000, B2=2902500, E=6