Properties

Label 2-2e3-8.3-c8-0-4
Degree $2$
Conductor $8$
Sign $1$
Analytic cond. $3.25902$
Root an. cond. $1.80527$
Motivic weight $8$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 16·2-s + 34·3-s + 256·4-s + 544·6-s + 4.09e3·8-s − 5.40e3·9-s − 2.71e4·11-s + 8.70e3·12-s + 6.55e4·16-s + 1.62e5·17-s − 8.64e4·18-s − 7.22e4·19-s − 4.34e5·22-s + 1.39e5·24-s + 3.90e5·25-s − 4.06e5·27-s + 1.04e6·32-s − 9.23e5·33-s + 2.59e6·34-s − 1.38e6·36-s − 1.15e6·38-s − 4.09e6·41-s + 5.42e6·43-s − 6.95e6·44-s + 2.22e6·48-s + 5.76e6·49-s + 6.25e6·50-s + ⋯
L(s)  = 1  + 2-s + 0.419·3-s + 4-s + 0.419·6-s + 8-s − 0.823·9-s − 1.85·11-s + 0.419·12-s + 16-s + 1.94·17-s − 0.823·18-s − 0.554·19-s − 1.85·22-s + 0.419·24-s + 25-s − 0.765·27-s + 32-s − 0.778·33-s + 1.94·34-s − 0.823·36-s − 0.554·38-s − 1.45·41-s + 1.58·43-s − 1.85·44-s + 0.419·48-s + 49-s + 50-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(9-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s+4) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(8\)    =    \(2^{3}\)
Sign: $1$
Analytic conductor: \(3.25902\)
Root analytic conductor: \(1.80527\)
Motivic weight: \(8\)
Rational: yes
Arithmetic: yes
Character: $\chi_{8} (3, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 8,\ (\ :4),\ 1)\)

Particular Values

\(L(\frac{9}{2})\) \(\approx\) \(2.503624620\)
\(L(\frac12)\) \(\approx\) \(2.503624620\)
\(L(5)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - p^{4} T \)
good3 \( 1 - 34 T + p^{8} T^{2} \)
5 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
7 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
11 \( 1 + 27166 T + p^{8} T^{2} \)
13 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
17 \( 1 - 162434 T + p^{8} T^{2} \)
19 \( 1 + 72286 T + p^{8} T^{2} \)
23 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
29 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
31 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
37 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
41 \( 1 + 4099006 T + p^{8} T^{2} \)
43 \( 1 - 5426402 T + p^{8} T^{2} \)
47 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
53 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
59 \( 1 + 24178078 T + p^{8} T^{2} \)
61 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
67 \( 1 + 13944286 T + p^{8} T^{2} \)
71 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
73 \( 1 - 33567554 T + p^{8} T^{2} \)
79 \( ( 1 - p^{4} T )( 1 + p^{4} T ) \)
83 \( 1 - 30209954 T + p^{8} T^{2} \)
89 \( 1 + 95519806 T + p^{8} T^{2} \)
97 \( 1 + 77418238 T + p^{8} T^{2} \)
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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

−20.43636867953846728421144808853, −18.83928285793122858494437083348, −16.66903314807526621007903369815, −15.17267667565937332290132996230, −13.90109340119322330440806244710, −12.46077624024266586220101207077, −10.60055291757551314740460033149, −7.86918561829260166901729442465, −5.45146516011363861796460456008, −2.90375573006020318424530649363, 2.90375573006020318424530649363, 5.45146516011363861796460456008, 7.86918561829260166901729442465, 10.60055291757551314740460033149, 12.46077624024266586220101207077, 13.90109340119322330440806244710, 15.17267667565937332290132996230, 16.66903314807526621007903369815, 18.83928285793122858494437083348, 20.43636867953846728421144808853

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