Marin Mersenne 2^P-1
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MnStatusDetails
15719771Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
697115312898113683784777512685.82024-07-18 04:48:40
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Bad2002-11-09Fabian Franke2FD1188EDD89DA0A6189051
Verified (Factored)2003-08-08Mason Guy31968D95449B7DDB352884
Verified (Factored)2005-12-12Eric Bravick31968D95449B7DDB5621428
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-09-18Henry_Huang_14285756E214DF1F098F2811061412053
P-1 factors
DateFactorB1B2
2024-07-186971153128981136837847775115000001391923260
History
DateUserTypeResult
2024-09-18DMITRII SHERTSISCERT
PRP Certification
Proof certified good
2024-09-18Henry_Huang_142857C-PRP
M15719771/69711531289811368378477751 : 56E214DF1F098F28
PRP proof power = 8
PRP: Verified
Proof certified good
2024-07-18Sid & AndyF-PM1
Factor: 69711531289811368378477751 / (P-1, B1=1500000, B2=1391923260)
2021-06-22-Anonymous-NF
no factor from 2^72 to 2^73
2021-06-20-Anonymous-NF
no factor from 2^71 to 2^72
2021-06-20-Anonymous-NF
no factor from 2^70 to 2^71
2021-05-30lycornNF
no factor from 2^69 to 2^70
2018-03-20ramgeisNF
no factor from 2^68 to 2^69
2018-03-20ramgeisNF
no factor from 2^67 to 2^68
2014-07-10NesowaNF
no factor from 2^66 to 2^67
2013-09-17David CampeauNF
no factor from 2^65 to 2^66