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

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MnStatusDetails
240041Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
13249485498141591457980341097455933106.72017-11-29 06:29:52
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000165 / 1566
Estimated T-Level: 30.5 ⓘ
TF below 2^96 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski65CA0
Verified (Factored)Unknown65CA0
Verified (Factored)Ken KieferDAAA513F0A5FE5CA0
Verified (Factored)Brian J. BeesleyDAAA513F0A5FE5CA0
Verified (Factored)Eivind TrielDAAA513F0A5FE5CA125676
Verified (Factored)2016-06-01MadPooDAAA513F0A5FE5CA191221
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-11-30kkmrkkblmbrbk281BC78281DD8A1715328653
Verified2017-11-30ATH281BC78281DD8A1712552853
History
DateUserTypeResult
2022-04-06Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-07-21Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2017-11-30ATHC-PRP
M240041/132494854981415914579803410974559 : 281BC78281DD8A17
PRP: Verified
PRP without proof (small exponent)
2017-11-30kkmrkkblmbrbkC-PRP
M240041/132494854981415914579803410974559 : 281BC78281DD8A17
PRP: Verified
PRP without proof (small exponent)
2017-11-29Kelly LowderF-ECM
Factor: 132494854981415914579803410974559
2016-06-01MadPooC-LL
DAAA513F0A5FE5CA
2016-05-13NumberwangNF-PM1
B1=2684, B2=67100
2016-02-23Mark RoseNF
no factor from 2^57 to 2^58
2016-01-12Gordon SpenceNF
no factor from 2^63 to 2^64
2016-01-12Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-27snme2pm1NF
no factor from 2^61 to 2^62
2014-12-18Denial140NF-PM1
B1=10000000, B2=250000000, E=12
2013-10-12David CampeauNF-PM1
B1=2670000, B2=77430000, E=12
2013-07-14lycornNF
no factor from 2^60 to 2^61
2012-02-26JossNF-PM1
B1=2641568
2011-07-24JossNF-PM1
B1=2113255
2011-02-03JossNF-PM1
B1=2000000
2009-02-07Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59