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

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MnStatusDetails
3451627Factored
FactorDigitsBitsDate
13019455856662174774312270.12022-11-28 19:21:04
ECM
DigitsB1Curves
255000075 / 280
Estimated T-Level: 21.3
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Charlie DorianEBD567415C67F2020
Verified (Factored)1999-07-27Jakob TrierEBD567415C67F2022725965
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-12-04LordJuliusCF748D5425195DF4110771653
History
DateUserTypeResult
2022-12-05ANONYMOUSCERT
PRP Certification
Proof certified good
2022-12-04LordJuliusC-PRP
M3451627/1301945585666217477431 : CF748D5425195DF4
PRP proof power = 7
PRP: Verified
Proof certified good
2022-11-28Sergey NosovF-ECM
Factor: 1301945585666217477431 / (ECM curve 3, B1=50000, B2=5000000)
2022-05-04TJAOINF
no factor from 2^69 to 2^70
2021-08-28mikrNF-PM1
B1=5000000, B2=200000000, E=12
2021-01-05axnNF
no factor from 2^68 to 2^69
2019-02-18TJAOINF
no factor from 2^67 to 2^68
2017-02-08Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-04-16Gordon SpenceNF
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
2014-09-20HBendtzNF-PM1
B1=500000, B2=10000000, E=12
2014-08-21JossNF-PM1
B1=78595
2012-08-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-11-05USAFSSNF-PM1
B1=60000, B2=945000, E=6
2011-07-31markrNF
no factor to 2^62
2009-07-06Carsten KossendeyNF-PM1
B1=20000, B2=235000
2009-03-21S485122NF
no factor from 2^60 to 2^61