Marin Mersenne 2^P-1
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MnStatusDetails
2202407Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
330275750711396758752172374.82015-12-09 09:35:51
ECM
DigitsB1Curves
2550000280 / 280
30250000163 / 640
Estimated T-Level: 26.3 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ray Strouble773F4276D5896B7F0
Verified (Factored)1999-04-23Gordon M. Spence773F4276D5896B7F1520062
Verified (Factored)1999-05-09Henner Wessel773F4276D5896B7F65590
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertron81FBA60EA3C8E3F11013
Verified2017-10-25Oliver Kruse81FBA60EA3C8E3F11135434013
P-1 factors
DateFactorB1B2
2015-12-0933027575071139675875217200000050000000
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2017-10-25Oliver KruseC-PRP
M2202407/33027575071139675875217 : 81FBA60EA3C8E3F1
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2202407/33027575071139675875217 : 81FBA60EA3C8E3F1
PRP: Verified
PRP without proof (not generated)
2016-04-08alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-12-09Alexander DubrovinF-PM1
Factor: 33027575071139675875217 / (P-1, B1=2000000, B2=50000000, E=12)
2015-12-03Alexander DubrovinNF-PM1
B1=2000000, B2=10000000, E=12
2015-11-24Alexander DubrovinNF-PM1
B1=1000000, B2=8000000, E=6
2015-11-22Alexander DubrovinNF-PM1
B1=1000000, B2=5000000, E=6
2015-10-18Alexander DubrovinNF
no factor from 2^65 to 2^66
2015-10-11Alexander DubrovinNF-PM1
B1=300000, B2=3000000, E=6
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-12-04LaurVNF
no factor from 2^62 to 2^63
2012-01-07Squeeky_SquirrelNF-PM1
B1=135000, B2=2733750, E=6
2011-01-16JossNF-PM1
B1=50000
2009-01-06Sturle SundeNF
no factor from 2^61 to 2^62
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61