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

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Exponent Range:










MnStatusDetails
2467763Factored
FactorDigitsBitsDate
30053591442329327169765204702654447448300508735348157.72019-03-15 05:03:28
ECM
DigitsB1Curves
255000033 / 280
Estimated T-Level: 20.6
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Lance Optican9548315FC2C208090
Verified (Factored)1999-05-09Edoardo Vismara9548315FC2C2080966311
Verified (Factored)2018-05-28kkmrkkblmbrbk9548315FC2C20809821396
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2019-03-16treborB74A15978449B0E419971753
Verified2019-03-16ATHB74A15978449B0E4187811853
P-1 factors
DateFactorB1B2
2019-03-153005359144232932716976520470265444744830050873536000000180000000
History
DateUserTypeResult
2019-03-16ATHC-PRP
M2467763/300535914423293271697652047026544474483005087353 : B74A15978449B0E4
PRP: Verified
PRP without proof (not generated)
2019-03-16treborC-PRP
M2467763/300535914423293271697652047026544474483005087353 : B74A15978449B0E4
PRP: Verified
PRP without proof (not generated)
2019-03-15Sid & AndyF-PM1
Factor: 300535914423293271697652047026544474483005087353 / (P-1, B1=6000000, B2=180000000, E=12)
2018-05-28kkmrkkblmbrbkC-LL
9548315FC2C20809
2017-07-16Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-27ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-10-22David CampeauNF-PM1
B1=590000, B2=15930000, E=12
2013-02-21dbaughNF
no factor from 2^62 to 2^63
2012-06-08Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-11-27JossNF-PM1
B1=246776
2010-11-19JossNF-PM1
B1=20000
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61