Properties

Label 2-7840-1.1-c1-0-156
Degree $2$
Conductor $7840$
Sign $-1$
Analytic cond. $62.6027$
Root an. cond. $7.91218$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2·3-s + 5-s + 9-s − 4·11-s + 6·13-s + 2·15-s − 2·17-s − 8·19-s − 6·23-s + 25-s − 4·27-s − 2·29-s − 4·31-s − 8·33-s + 2·37-s + 12·39-s + 10·41-s − 2·43-s + 45-s + 2·47-s − 4·51-s + 2·53-s − 4·55-s − 16·57-s − 2·61-s + 6·65-s − 6·67-s + ⋯
L(s)  = 1  + 1.15·3-s + 0.447·5-s + 1/3·9-s − 1.20·11-s + 1.66·13-s + 0.516·15-s − 0.485·17-s − 1.83·19-s − 1.25·23-s + 1/5·25-s − 0.769·27-s − 0.371·29-s − 0.718·31-s − 1.39·33-s + 0.328·37-s + 1.92·39-s + 1.56·41-s − 0.304·43-s + 0.149·45-s + 0.291·47-s − 0.560·51-s + 0.274·53-s − 0.539·55-s − 2.11·57-s − 0.256·61-s + 0.744·65-s − 0.733·67-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7840 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7840 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7840\)    =    \(2^{5} \cdot 5 \cdot 7^{2}\)
Sign: $-1$
Analytic conductor: \(62.6027\)
Root analytic conductor: \(7.91218\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 7840,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) 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 \( 1 - T \)
7 \( 1 \)
good3 \( 1 - 2 T + p T^{2} \)
11 \( 1 + 4 T + p T^{2} \)
13 \( 1 - 6 T + p T^{2} \)
17 \( 1 + 2 T + p T^{2} \)
19 \( 1 + 8 T + p T^{2} \)
23 \( 1 + 6 T + p T^{2} \)
29 \( 1 + 2 T + p T^{2} \)
31 \( 1 + 4 T + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 - 10 T + p T^{2} \)
43 \( 1 + 2 T + p T^{2} \)
47 \( 1 - 2 T + p T^{2} \)
53 \( 1 - 2 T + p T^{2} \)
59 \( 1 + p T^{2} \)
61 \( 1 + 2 T + p T^{2} \)
67 \( 1 + 6 T + p T^{2} \)
71 \( 1 + 12 T + p T^{2} \)
73 \( 1 + 10 T + p T^{2} \)
79 \( 1 + 8 T + p T^{2} \)
83 \( 1 - 10 T + p T^{2} \)
89 \( 1 - 6 T + p T^{2} \)
97 \( 1 + 10 T + p T^{2} \)
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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

−7.83938537083331631256637178062, −6.85425115459008901949951264155, −5.95399035311661128750600979066, −5.70422636800381836064399540615, −4.36257795409630888270702034421, −3.93124254095635158199786653018, −2.95678195034229114542622482450, −2.30681786687542446203602074113, −1.63017756465829949468805905873, 0, 1.63017756465829949468805905873, 2.30681786687542446203602074113, 2.95678195034229114542622482450, 3.93124254095635158199786653018, 4.36257795409630888270702034421, 5.70422636800381836064399540615, 5.95399035311661128750600979066, 6.85425115459008901949951264155, 7.83938537083331631256637178062

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