Marin Mersenne 2^P-1
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MnStatusDetails
2122711Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
110707627417743673584972373.22017-08-27 11:36:31
ECM
DigitsB1Curves
2550000280 / 280
30250000162 / 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)Ronnie VanDommelen9CF02D6DAF9DBD990
Verified (Factored)Brian J. Beesley9CF02D6DAF9DBD990
Verified (Factored)2015-11-14MadPoo9CF02D6DAF9DBD991741326
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-30alpertron678C076D65DD1E431013
Verified2017-10-21Oliver Kruse678C076D65DD1E431155793113
P-1 factors
DateFactorB1B2
2017-08-27110707627417743673584972500000125000000
History
DateUserTypeResult
2017-10-21Oliver KruseC-PRP
M2122711/11070762741774367358497 : 678C076D65DD1E43
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2122711/11070762741774367358497 : 678C076D65DD1E43
PRP: Verified
PRP without proof (not generated)
2017-08-30JossNF-PM1
B1=504000, B2=5040000, E=6
2017-08-27mikrF-PM1
Factor: 11070762741774367358497 / (P-1, B1=2500000, B2=125000000, E=12)
2017-08-19JossNF-PM1
B1=420000, B2=4200000, E=6
2016-10-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-06-24JossNF-PM1
B1=210000, B2=6090000, E=12
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-14MadPooC-LL
9CF02D6DAF9DBD99
2015-10-25omylistNF
no factor from 2^65 to 2^66
2015-03-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-15VictordeHollanderNF
no factor from 2^63 to 2^64
2013-09-06ramgeisNF
no factor from 2^62 to 2^63
2012-04-02Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-24James HeinrichNF-PM1
B1=140000, B2=3045000, E=6
2011-01-11JossNF-PM1
B1=50000
2011-01-01JossNF-PM1
B1=30000
2009-08-03USAFSSNF-PM1
B1=20000, B2=265000
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61