Marin Mersenne 2^P-1
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MnStatusDetails
3109697Factored
FactorDigitsBitsDate
430385357406629361300829610712995.12018-08-29 19:49:36
ECM
DigitsB1Curves
255000015 / 280
Estimated T-Level: 20.3
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Henrik Flodell7C7DB15DF1B121090
Verified (Factored)1999-05-16Michael Durham7C7DB15DF1B12109185553
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-08-30Oliver Kruse57E6D18C4233A3501310748353
Verified2018-09-03Luigi Morelli57E6D18C4233A3501258978953
P-1 factors
DateFactorB1B2
2018-08-294303853574066293613008296107130000000
History
DateUserTypeResult
2022-01-09JossNF
no factor from 2^68 to 2^69
2021-12-22JossNF-PM1
B1=3109697, B2=668289930
2021-12-21JossNF-PM1
B1=3109697, B2=139847400
2021-12-08JossNF-PM1
B1=3109697, B2=31096970, E=12
2021-11-20JossNF-PM1
B1=3109697
2021-02-25JossNF
no factor from 2^67 to 2^68
2021-01-03JossNF
no factor from 2^65 to 2^66
2018-09-03Luigi MorelliC-PRP
M3109697/43038535740662936130082961071 : 57E6D18C4233A350
PRP: Verified
PRP without proof (not generated)
2018-08-30Oliver KruseC-PRP
M3109697/43038535740662936130082961071 : 57E6D18C4233A350
PRP: Verified
PRP without proof (not generated)
2018-08-29mikrF-PM1
Factor: 43038535740662936130082961071 / (P-1, B1=3000000)
2017-04-11Gordon SpenceNF
no factor from 2^66 to 2^67
2017-03-11JossNF-PM1
B1=269568, B2=2695680, E=6
2017-02-15JossNF-PM1
B1=224640, B2=2246400, E=6
2017-02-04JossNF-PM1
B1=187200
2017-01-29JossNF-PM1
B1=156000
2016-12-27JossNF-PM1
B1=120000
2016-08-30JossNF-PM1
B1=100000, B2=4250000, E=6
2015-06-11ThaNF
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
2013-01-03dbaughNF
no factor from 2^62 to 2^63
2011-11-20markrNF
no factor from 2^61 to 2^62
2011-08-23Squeeky_SquirrelNF-PM1
B1=100000, B2=2125000, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=180000
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61