Marin Mersenne 2^P-1
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MnStatusDetails
15597623Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2718810272906464123170712477.82022-04-12 06:18:27
6062568553620129798970492479.02022-04-12 06:18:27
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
Verified (Factored)2002-06-29Mason GuyD853F37E3B3E19521790485
Verified (Factored)2006-02-01Ars Technica Team Prime RibD853F37E3B3E1952566507
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-08-17PerigE5A451F763B73A582576125253
P-1 factors
DateFactorB1B2
2022-04-12164829736637820925715338537480317238787125223479799000309882300
History
DateUserTypeResult
2023-08-17Günter BalbigCERT
PRP Certification
Proof certified good
2023-08-17PerigC-PRP
M15597623/606256855362012979897049/271881027290646412317071 : E5A451F763B73A58
PRP proof power = 8
PRP: Verified
Proof certified good
2022-04-12Architects CubedF-PM1
Factor: 164829736637820925715338537480317238787125223479 / (P-1, B1=799000, B2=309882300)
2022-02-13Denial140NF
no factor from 2^73 to 2^74
2022-01-17Denial140NF
no factor from 2^72 to 2^73
2021-09-24-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-07SRBaseNF
no factor from 2^70 to 2^71
2021-06-09lycornNF
no factor from 2^69 to 2^70
2018-03-11ramgeisNF
no factor from 2^68 to 2^69
2018-03-11ramgeisNF
no factor from 2^67 to 2^68
2016-06-14ThaNF-PM1
B1=300000, B2=6000000, E=12
2013-12-28NesowaNF
no factor from 2^66 to 2^67
2013-09-09David CampeauNF
no factor from 2^65 to 2^66