Properties

Label 2-2e3-8.3-c14-0-7
Degree $2$
Conductor $8$
Sign $1$
Analytic cond. $9.94631$
Root an. cond. $3.15377$
Motivic weight $14$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 128·2-s + 3.02e3·3-s + 1.63e4·4-s − 3.86e5·6-s − 2.09e6·8-s + 4.34e6·9-s + 3.87e7·11-s + 4.95e7·12-s + 2.68e8·16-s − 3.28e8·17-s − 5.56e8·18-s + 1.77e9·19-s − 4.95e9·22-s − 6.33e9·24-s + 6.10e9·25-s − 1.30e9·27-s − 3.43e10·32-s + 1.16e11·33-s + 4.20e10·34-s + 7.12e10·36-s − 2.27e11·38-s − 3.33e11·41-s − 4.95e11·43-s + 6.34e11·44-s + 8.11e11·48-s + 6.78e11·49-s − 7.81e11·50-s + ⋯
L(s)  = 1  − 2-s + 1.38·3-s + 4-s − 1.38·6-s − 8-s + 0.909·9-s + 1.98·11-s + 1.38·12-s + 16-s − 0.800·17-s − 0.909·18-s + 1.99·19-s − 1.98·22-s − 1.38·24-s + 25-s − 0.125·27-s − 32-s + 2.74·33-s + 0.800·34-s + 0.909·36-s − 1.99·38-s − 1.71·41-s − 1.82·43-s + 1.98·44-s + 1.38·48-s + 49-s − 50-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(15-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s+7) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(8\)    =    \(2^{3}\)
Sign: $1$
Analytic conductor: \(9.94631\)
Root analytic conductor: \(3.15377\)
Motivic weight: \(14\)
Rational: yes
Arithmetic: yes
Character: $\chi_{8} (3, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 8,\ (\ :7),\ 1)\)

Particular Values

\(L(\frac{15}{2})\) \(\approx\) \(1.900961425\)
\(L(\frac12)\) \(\approx\) \(1.900961425\)
\(L(8)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + p^{7} T \)
good3 \( 1 - 3022 T + p^{14} T^{2} \)
5 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
7 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
11 \( 1 - 38712254 T + p^{14} T^{2} \)
13 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
17 \( 1 + 328636222 T + p^{14} T^{2} \)
19 \( 1 - 1778973806 T + p^{14} T^{2} \)
23 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
29 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
31 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
37 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
41 \( 1 + 333393570766 T + p^{14} T^{2} \)
43 \( 1 + 495012562114 T + p^{14} T^{2} \)
47 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
53 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
59 \( 1 + 3914494552162 T + p^{14} T^{2} \)
61 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
67 \( 1 - 2711103884558 T + p^{14} T^{2} \)
71 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
73 \( 1 - 1579402558802 T + p^{14} T^{2} \)
79 \( ( 1 - p^{7} T )( 1 + p^{7} T ) \)
83 \( 1 + 31146255762898 T + p^{14} T^{2} \)
89 \( 1 + 38433671549134 T + p^{14} T^{2} \)
97 \( 1 + 62815034524126 T + p^{14} T^{2} \)
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   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{2} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−18.47905191911126664081832791761, −16.85997900015321141236509469629, −15.22712927524386064362087199261, −14.00024357206983060554327865514, −11.72142874505739255616761837470, −9.568716191943336008868342047222, −8.631829122108633054440403169790, −6.96000348790171253541822008014, −3.28655077430416968622719342561, −1.46323286457274976347416750291, 1.46323286457274976347416750291, 3.28655077430416968622719342561, 6.96000348790171253541822008014, 8.631829122108633054440403169790, 9.568716191943336008868342047222, 11.72142874505739255616761837470, 14.00024357206983060554327865514, 15.22712927524386064362087199261, 16.85997900015321141236509469629, 18.47905191911126664081832791761

Graph of the $Z$-function along the critical line