Properties

Label 2-91-1.1-c7-0-31
Degree $2$
Conductor $91$
Sign $1$
Analytic cond. $28.4270$
Root an. cond. $5.33170$
Motivic weight $7$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 22·2-s + 21·3-s + 356·4-s + 140·5-s + 462·6-s − 343·7-s + 5.01e3·8-s − 1.74e3·9-s + 3.08e3·10-s + 5.05e3·11-s + 7.47e3·12-s − 2.19e3·13-s − 7.54e3·14-s + 2.94e3·15-s + 6.47e4·16-s + 2.73e4·17-s − 3.84e4·18-s − 3.26e4·19-s + 4.98e4·20-s − 7.20e3·21-s + 1.11e5·22-s − 2.30e4·23-s + 1.05e5·24-s − 5.85e4·25-s − 4.83e4·26-s − 8.25e4·27-s − 1.22e5·28-s + ⋯
L(s)  = 1  + 1.94·2-s + 0.449·3-s + 2.78·4-s + 0.500·5-s + 0.873·6-s − 0.377·7-s + 3.46·8-s − 0.798·9-s + 0.973·10-s + 1.14·11-s + 1.24·12-s − 0.277·13-s − 0.734·14-s + 0.224·15-s + 3.95·16-s + 1.35·17-s − 1.55·18-s − 1.09·19-s + 1.39·20-s − 0.169·21-s + 2.22·22-s − 0.395·23-s + 1.55·24-s − 0.749·25-s − 0.539·26-s − 0.807·27-s − 1.05·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 91 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(8-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 91 ^{s/2} \, \Gamma_{\C}(s+7/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(91\)    =    \(7 \cdot 13\)
Sign: $1$
Analytic conductor: \(28.4270\)
Root analytic conductor: \(5.33170\)
Motivic weight: \(7\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 91,\ (\ :7/2),\ 1)\)

Particular Values

\(L(4)\) \(\approx\) \(8.201964588\)
\(L(\frac12)\) \(\approx\) \(8.201964588\)
\(L(\frac{9}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 + p^{3} T \)
13 \( 1 + p^{3} T \)
good2 \( 1 - 11 p T + p^{7} T^{2} \)
3 \( 1 - 7 p T + p^{7} T^{2} \)
5 \( 1 - 28 p T + p^{7} T^{2} \)
11 \( 1 - 5051 T + p^{7} T^{2} \)
17 \( 1 - 27384 T + p^{7} T^{2} \)
19 \( 1 + 32690 T + p^{7} T^{2} \)
23 \( 1 + 23085 T + p^{7} T^{2} \)
29 \( 1 + 14068 T + p^{7} T^{2} \)
31 \( 1 + 203007 T + p^{7} T^{2} \)
37 \( 1 - 544041 T + p^{7} T^{2} \)
41 \( 1 + 352079 T + p^{7} T^{2} \)
43 \( 1 - 340412 T + p^{7} T^{2} \)
47 \( 1 - 406329 T + p^{7} T^{2} \)
53 \( 1 + 1909680 T + p^{7} T^{2} \)
59 \( 1 + 2867214 T + p^{7} T^{2} \)
61 \( 1 + 216419 T + p^{7} T^{2} \)
67 \( 1 - 2538043 T + p^{7} T^{2} \)
71 \( 1 + 2071872 T + p^{7} T^{2} \)
73 \( 1 - 185913 T + p^{7} T^{2} \)
79 \( 1 + 954631 T + p^{7} T^{2} \)
83 \( 1 - 5649672 T + p^{7} T^{2} \)
89 \( 1 + 4673830 T + p^{7} T^{2} \)
97 \( 1 + 13686645 T + p^{7} T^{2} \)
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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

−12.82335145976683507649204402472, −12.01091830576325984977196578932, −10.98440174692348230790418040057, −9.556317392599175389741923589716, −7.76552647548874126676124409088, −6.35709795650353071995654041801, −5.65336986020065899529988686625, −4.11416711914782565940976020985, −3.07964288778612313257754580291, −1.83945285411121143181725198345, 1.83945285411121143181725198345, 3.07964288778612313257754580291, 4.11416711914782565940976020985, 5.65336986020065899529988686625, 6.35709795650353071995654041801, 7.76552647548874126676124409088, 9.556317392599175389741923589716, 10.98440174692348230790418040057, 12.01091830576325984977196578932, 12.82335145976683507649204402472

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