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

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MnStatusDetails
3495253Factored
FactorDigitsBitsDate
8102463302782176237112169.52021-04-21 17:41:46
ECM
DigitsB1Curves
255000022 / 280
Estimated T-Level: 20.4
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Dax PratherE0874DCEC1E1604F0
Verified (Factored)1999-07-04Carey GisterE0874DCEC1E1604F2257879
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-04-21mikr89D8C2778C26EAE81175563753
Verified2021-04-22XZT89D8C2778C26EAE81241600753
History
DateUserTypeResult
2022-04-10JossNF-PM1
B1=1000000, B2=126668850
2021-04-22ffreckleCERT
PRP Certification
Proof certified good
2021-04-22XZTC-PRP
M3495253/810246330278217623711 : 89D8C2778C26EAE8
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-21MikeCERT
PRP Certification
Proof certified good
2021-04-21mikrC-PRP
M3495253/810246330278217623711 : 89D8C2778C26EAE8
PRP proof power = 7
PRP: Verified
Proof certified good
2021-04-21ZenzomaF-ECM
Factor: 810246330278217623711 / (ECM curve 7, B1=50000, B2=5000000, Sigma=5938569204455783)
2021-04-06axnNF-PM1
B1=15000000, B2=750000000
2021-01-13axnNF
no factor from 2^68 to 2^69
2018-07-23TJAOINF
no factor from 2^67 to 2^68
2017-02-20Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-01-06ramgeisNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2014-09-05HBendtzNF-PM1
B1=615000, B2=12000000, e=12
2014-08-21JossNF-PM1
B1=78363
2012-08-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-11-18USAFSSNF-PM1
B1=60000, B2=990000, E=6
2011-07-14markrNF
no factor to 2^62
2009-07-08Carsten KossendeyNF-PM1
B1=20000, B2=240000
2009-03-19S485122NF
no factor from 2^60 to 2^61