Properties

Label 2-40-1.1-c1-0-0
Degree $2$
Conductor $40$
Sign $1$
Analytic cond. $0.319401$
Root an. cond. $0.565156$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 5-s − 4·7-s − 3·9-s + 4·11-s − 2·13-s + 2·17-s + 4·19-s + 4·23-s + 25-s − 2·29-s − 8·31-s − 4·35-s + 6·37-s − 6·41-s − 8·43-s − 3·45-s + 4·47-s + 9·49-s + 6·53-s + 4·55-s − 4·59-s − 2·61-s + 12·63-s − 2·65-s + 8·67-s − 6·73-s − 16·77-s + ⋯
L(s)  = 1  + 0.447·5-s − 1.51·7-s − 9-s + 1.20·11-s − 0.554·13-s + 0.485·17-s + 0.917·19-s + 0.834·23-s + 1/5·25-s − 0.371·29-s − 1.43·31-s − 0.676·35-s + 0.986·37-s − 0.937·41-s − 1.21·43-s − 0.447·45-s + 0.583·47-s + 9/7·49-s + 0.824·53-s + 0.539·55-s − 0.520·59-s − 0.256·61-s + 1.51·63-s − 0.248·65-s + 0.977·67-s − 0.702·73-s − 1.82·77-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 40 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 40 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(40\)    =    \(2^{3} \cdot 5\)
Sign: $1$
Analytic conductor: \(0.319401\)
Root analytic conductor: \(0.565156\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 40,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.7422062367\)
\(L(\frac12)\) \(\approx\) \(0.7422062367\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
5 \( 1 - T \)
good3 \( 1 + p T^{2} \)
7 \( 1 + 4 T + p T^{2} \)
11 \( 1 - 4 T + p T^{2} \)
13 \( 1 + 2 T + p T^{2} \)
17 \( 1 - 2 T + p T^{2} \)
19 \( 1 - 4 T + p T^{2} \)
23 \( 1 - 4 T + p T^{2} \)
29 \( 1 + 2 T + p T^{2} \)
31 \( 1 + 8 T + p T^{2} \)
37 \( 1 - 6 T + p T^{2} \)
41 \( 1 + 6 T + p T^{2} \)
43 \( 1 + 8 T + p T^{2} \)
47 \( 1 - 4 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 + 4 T + p T^{2} \)
61 \( 1 + 2 T + p T^{2} \)
67 \( 1 - 8 T + p T^{2} \)
71 \( 1 + p T^{2} \)
73 \( 1 + 6 T + p T^{2} \)
79 \( 1 + p T^{2} \)
83 \( 1 + 16 T + p T^{2} \)
89 \( 1 + 6 T + p T^{2} \)
97 \( 1 + 14 T + p T^{2} \)
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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

−16.54367915654916380177508640952, −14.95092089654112303026933531279, −13.90086992520560888964063455546, −12.70951559228550877361223816630, −11.52426214006865205005559601963, −9.851840183892789826086741161768, −9.022035638415746178025932660186, −6.97238544391138654785050907556, −5.70093888866808737514223874840, −3.26180587408034592610487247010, 3.26180587408034592610487247010, 5.70093888866808737514223874840, 6.97238544391138654785050907556, 9.022035638415746178025932660186, 9.851840183892789826086741161768, 11.52426214006865205005559601963, 12.70951559228550877361223816630, 13.90086992520560888964063455546, 14.95092089654112303026933531279, 16.54367915654916380177508640952

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