Marin Mersenne 2^P-1
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MnStatusDetails
2501923Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
48111041652713744927829804972892.02023-01-22 04:55:58
ECM
DigitsB1Curves
2550000178 / 280
Estimated T-Level: 23.2 ⓘ
TF below 2^72 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Gary Wells95E1839353F7910D0
Verified (Factored)1999-03-26Mark John Buenconsejo95E1839353F7910D2151611
Verified (Factored)2018-06-02kkmrkkblmbrbk95E1839353F7910D1740080
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-22SRJ287756B7FA291E1D0B701185026053
P-1 factors
DateFactorB1B2
2023-01-22481110416527137449278298049750000008936884110
History
DateUserTypeResult
2023-01-22curtiscCERT
PRP Certification
Proof certified good
2023-01-22SRJ2877C-PRP
M2501923/4811104165271374492782980497 : 56B7FA291E1D0B70
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-22Architects CubedF-PM1
Factor: 4811104165271374492782980497 / (P-1, B1=5000000, B2=8936884110)
2022-11-01Architects CubedNF
no factor from 2^69 to 2^70
2021-07-05TJAOINF
no factor from 2^68 to 2^69
2019-05-27TJAOINF
no factor from 2^67 to 2^68
2018-06-02kkmrkkblmbrbkC-LL
95E1839353F7910D
2018-04-01mikrNF-PM1
B1=3000000, B2=135000000, E=12
2017-11-01JossNF-PM1
B1=600000, B2=6000000, E=6
2017-07-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-04ramgeisNF
no factor from 2^65 to 2^66
2015-02-18VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-18VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-12Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-02-28James HeinrichNF-PM1
B1=300000, B2=8000000, E=12
2011-01-19JossNF-PM1
B1=50000
2011-01-01JossNF-PM1
B1=30000
2010-12-16JossNF-PM1
B1=20000
2009-02-01Sturle SundeNF
no factor from 2^60 to 2^61