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

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Exponent Range:










MnStatusDetails
3515509Factored
FactorDigitsBitsDate
1203404697536230305588036122593736323938123.22021-11-10 14:15:27
ECM
DigitsB1Curves
255000044 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)INTERSHOP Communications83B76D896C3EF45A0
Verified (Factored)1999-07-12Michael Lyons83B76D896C3EF45A1939607
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-11-16LaurV1D412BDF6538FB091174681253
Verified2021-11-17LordJulius1D412BDF6538FB091289750353
P-1 factors
DateFactorB1B2
2021-11-101203404697536230305588036122593736323940000004000000
History
DateUserTypeResult
2022-07-17JossNF-PM1
B1=3515509, B2=3556971600
2022-04-08JossNF-PM1
B1=1000000, B2=145126800
2021-11-17tottenhoffCERT
PRP Certification
Proof certified good
2021-11-17LordJuliusC-PRP
M3515509/12034046975362303055880361225937363239 : 1D412BDF6538FB09
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-16Anson HonCERT
PRP Certification
Proof certified good
2021-11-16LaurVC-PRP
M3515509/12034046975362303055880361225937363239 : 1D412BDF6538FB09
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-10mikrF-PM1
Factor: 12034046975362303055880361225937363239 / (P-1, B1=4000000)
2021-08-29ArtyomPNF-PP1
Start=6/5, B1=50000, B2=2500000
2021-08-29ArtyomPNF-PP1
Start=2/7, B1=50000, B2=2500000
2021-03-20-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-18-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-18-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-17axnNF
no factor from 2^68 to 2^69
2018-12-03TJAOINF
no factor from 2^67 to 2^68
2017-01-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-03-02YxinityNF
no factor from 2^65 to 2^66
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-01-27VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-27VictordeHollanderNF
no factor from 2^63 to 2^64
2012-06-20GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-11-15markrNF-PM1
B1=235000, B2=5933750, E=12
2011-07-06markrNF
no factor from 2^61 to 2^62
2009-07-06Carsten KossendeyNF-PM1
B1=20000, B2=240000
2009-03-18Jayson KingNF
no factor from 2^60 to 2^61