Properties

Label 2-1680-1.1-c1-0-13
Degree $2$
Conductor $1680$
Sign $1$
Analytic cond. $13.4148$
Root an. cond. $3.66263$
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 + 5-s − 7-s + 9-s + 2·11-s + 4·13-s + 15-s + 2·17-s − 2·19-s − 21-s − 4·23-s + 25-s + 27-s + 6·29-s + 2·31-s + 2·33-s − 35-s + 10·37-s + 4·39-s − 10·41-s − 12·43-s + 45-s + 8·47-s + 49-s + 2·51-s + 2·55-s − 2·57-s + ⋯
L(s)  = 1  + 0.577·3-s + 0.447·5-s − 0.377·7-s + 1/3·9-s + 0.603·11-s + 1.10·13-s + 0.258·15-s + 0.485·17-s − 0.458·19-s − 0.218·21-s − 0.834·23-s + 1/5·25-s + 0.192·27-s + 1.11·29-s + 0.359·31-s + 0.348·33-s − 0.169·35-s + 1.64·37-s + 0.640·39-s − 1.56·41-s − 1.82·43-s + 0.149·45-s + 1.16·47-s + 1/7·49-s + 0.280·51-s + 0.269·55-s − 0.264·57-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $1$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.447734461\)
\(L(\frac12)\) \(\approx\) \(2.447734461\)
\(L(\frac{3}{2})\) 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 \( 1 - T \)
5 \( 1 - T \)
7 \( 1 + T \)
good11 \( 1 - 2 T + p T^{2} \)
13 \( 1 - 4 T + p T^{2} \)
17 \( 1 - 2 T + p T^{2} \)
19 \( 1 + 2 T + p T^{2} \)
23 \( 1 + 4 T + p T^{2} \)
29 \( 1 - 6 T + p T^{2} \)
31 \( 1 - 2 T + p T^{2} \)
37 \( 1 - 10 T + p T^{2} \)
41 \( 1 + 10 T + p T^{2} \)
43 \( 1 + 12 T + p T^{2} \)
47 \( 1 - 8 T + p T^{2} \)
53 \( 1 + p T^{2} \)
59 \( 1 - 8 T + p T^{2} \)
61 \( 1 + 2 T + p T^{2} \)
67 \( 1 - 12 T + p T^{2} \)
71 \( 1 - 10 T + p T^{2} \)
73 \( 1 - 4 T + p T^{2} \)
79 \( 1 + p T^{2} \)
83 \( 1 - 12 T + p T^{2} \)
89 \( 1 - 2 T + p T^{2} \)
97 \( 1 + 8 T + p T^{2} \)
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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

−9.400995659655040485727344275368, −8.462490963754134936041462650574, −8.068746109488835656573464653150, −6.71708601802593047537004384094, −6.36185327162722628775782482780, −5.30543227076786197255278313353, −4.13885998046531429175446004532, −3.41465499758095248407222737356, −2.31893759129696710321952883547, −1.14962546214454853047019089793, 1.14962546214454853047019089793, 2.31893759129696710321952883547, 3.41465499758095248407222737356, 4.13885998046531429175446004532, 5.30543227076786197255278313353, 6.36185327162722628775782482780, 6.71708601802593047537004384094, 8.068746109488835656573464653150, 8.462490963754134936041462650574, 9.400995659655040485727344275368

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