Properties

Label 2-768-1.1-c1-0-2
Degree $2$
Conductor $768$
Sign $1$
Analytic cond. $6.13251$
Root an. cond. $2.47639$
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  − 3-s + 2·5-s − 2·7-s + 9-s + 4·13-s − 2·15-s − 2·17-s + 4·19-s + 2·21-s + 4·23-s − 25-s − 27-s + 6·29-s − 2·31-s − 4·35-s + 8·37-s − 4·39-s − 2·41-s + 4·43-s + 2·45-s + 12·47-s − 3·49-s + 2·51-s + 6·53-s − 4·57-s − 4·59-s − 2·63-s + ⋯
L(s)  = 1  − 0.577·3-s + 0.894·5-s − 0.755·7-s + 1/3·9-s + 1.10·13-s − 0.516·15-s − 0.485·17-s + 0.917·19-s + 0.436·21-s + 0.834·23-s − 1/5·25-s − 0.192·27-s + 1.11·29-s − 0.359·31-s − 0.676·35-s + 1.31·37-s − 0.640·39-s − 0.312·41-s + 0.609·43-s + 0.298·45-s + 1.75·47-s − 3/7·49-s + 0.280·51-s + 0.824·53-s − 0.529·57-s − 0.520·59-s − 0.251·63-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(768\)    =    \(2^{8} \cdot 3\)
Sign: $1$
Analytic conductor: \(6.13251\)
Root analytic conductor: \(2.47639\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 768,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.453727716\)
\(L(\frac12)\) \(\approx\) \(1.453727716\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 + T \)
good5 \( 1 - 2 T + p T^{2} \)
7 \( 1 + 2 T + p T^{2} \)
11 \( 1 + p T^{2} \)
13 \( 1 - 4 T + p T^{2} \)
17 \( 1 + 2 T + p T^{2} \)
19 \( 1 - 4 T + p T^{2} \)
23 \( 1 - 4 T + p T^{2} \)
29 \( 1 - 6 T + p T^{2} \)
31 \( 1 + 2 T + p T^{2} \)
37 \( 1 - 8 T + p T^{2} \)
41 \( 1 + 2 T + p T^{2} \)
43 \( 1 - 4 T + p T^{2} \)
47 \( 1 - 12 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 + 4 T + p T^{2} \)
61 \( 1 + p T^{2} \)
67 \( 1 + 12 T + p T^{2} \)
71 \( 1 - 12 T + p T^{2} \)
73 \( 1 - 6 T + p T^{2} \)
79 \( 1 + 10 T + p T^{2} \)
83 \( 1 - 16 T + p T^{2} \)
89 \( 1 - 10 T + p T^{2} \)
97 \( 1 + 2 T + p T^{2} \)
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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

−10.34935950175211712364487117087, −9.494482055881130926006645834294, −8.889403972374772412587674256600, −7.60982656432259660497620212594, −6.53729896264740462444493449031, −6.02952025279743756519610804548, −5.12505772656764585053702097555, −3.87120361857012739887619384713, −2.63713724931622987423343237649, −1.09527349773841298009626376824, 1.09527349773841298009626376824, 2.63713724931622987423343237649, 3.87120361857012739887619384713, 5.12505772656764585053702097555, 6.02952025279743756519610804548, 6.53729896264740462444493449031, 7.60982656432259660497620212594, 8.889403972374772412587674256600, 9.494482055881130926006645834294, 10.34935950175211712364487117087

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