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

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MnStatusDetails
2240807Factored
FactorDigitsBitsDate
33008939100147542373929032581.42015-12-03 19:16:29
ECM
DigitsB1Curves
255000085 / 280
Estimated T-Level: 21.5 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Martin Fahlgren9B7FFD789833DDF80
Verified (Factored)1999-02-14Robert S. Frye9B7FFD789833DDF8418372
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertronD0D81F12395E3EC31013
Verified2017-10-28Oliver KruseD0D81F12395E3EC31202253513
P-1 factors
DateFactorB1B2
2015-12-03330089391001475423739290310000006000000
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-10-28Oliver KruseC-PRP
M2240807/3300893910014754237392903 : D0D81F12395E3EC3
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2240807/3300893910014754237392903 : D0D81F12395E3EC3
PRP: Verified
PRP without proof (not generated)
2016-04-24alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-12-03Alexander DubrovinF-PM1
Factor: 3300893910014754237392903 / (P-1, B1=1000000, B2=6000000, E=6)
2015-10-26ramgeisNF
no factor from 2^65 to 2^66
2015-03-10VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-10VictordeHollanderNF
no factor from 2^63 to 2^64
2014-08-25-Anonymous-NF-PM1
B1=128643
2013-08-21David CampeauNF
no factor from 2^62 to 2^63
2012-05-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-08markrNF-PM1
B1=100000, B2=2050000, E=6
2010-11-10JossNF-PM1
B1=30000
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61