Properties

Label 2-20e2-1.1-c1-0-6
Degree $2$
Conductor $400$
Sign $-1$
Analytic cond. $3.19401$
Root an. cond. $1.78718$
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  − 3-s − 2·7-s − 2·9-s + 3·11-s − 4·13-s − 3·17-s − 5·19-s + 2·21-s − 6·23-s + 5·27-s − 2·31-s − 3·33-s + 2·37-s + 4·39-s − 3·41-s + 4·43-s − 12·47-s − 3·49-s + 3·51-s + 6·53-s + 5·57-s + 2·61-s + 4·63-s + 13·67-s + 6·69-s − 12·71-s + 11·73-s + ⋯
L(s)  = 1  − 0.577·3-s − 0.755·7-s − 2/3·9-s + 0.904·11-s − 1.10·13-s − 0.727·17-s − 1.14·19-s + 0.436·21-s − 1.25·23-s + 0.962·27-s − 0.359·31-s − 0.522·33-s + 0.328·37-s + 0.640·39-s − 0.468·41-s + 0.609·43-s − 1.75·47-s − 3/7·49-s + 0.420·51-s + 0.824·53-s + 0.662·57-s + 0.256·61-s + 0.503·63-s + 1.58·67-s + 0.722·69-s − 1.42·71-s + 1.28·73-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(400\)    =    \(2^{4} \cdot 5^{2}\)
Sign: $-1$
Analytic conductor: \(3.19401\)
Root analytic conductor: \(1.78718\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 400,\ (\ :1/2),\ -1)\)

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 \( 1 \)
good3 \( 1 + T + p T^{2} \)
7 \( 1 + 2 T + p T^{2} \)
11 \( 1 - 3 T + p T^{2} \)
13 \( 1 + 4 T + p T^{2} \)
17 \( 1 + 3 T + p T^{2} \)
19 \( 1 + 5 T + p T^{2} \)
23 \( 1 + 6 T + p T^{2} \)
29 \( 1 + p T^{2} \)
31 \( 1 + 2 T + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 + 3 T + p T^{2} \)
43 \( 1 - 4 T + p T^{2} \)
47 \( 1 + 12 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 + p T^{2} \)
61 \( 1 - 2 T + p T^{2} \)
67 \( 1 - 13 T + p T^{2} \)
71 \( 1 + 12 T + p T^{2} \)
73 \( 1 - 11 T + p T^{2} \)
79 \( 1 - 10 T + p T^{2} \)
83 \( 1 - 9 T + p T^{2} \)
89 \( 1 - 15 T + p T^{2} \)
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

−10.89154339860195613441988561800, −9.919702445885858877180142258118, −9.107735829970857706936675027245, −8.082389583115066239879169681269, −6.71237324686107378754912317869, −6.21926731108516302667159437545, −4.98537291304699817306164733550, −3.80421461859967166401405341307, −2.32235507105178670692643054585, 0, 2.32235507105178670692643054585, 3.80421461859967166401405341307, 4.98537291304699817306164733550, 6.21926731108516302667159437545, 6.71237324686107378754912317869, 8.082389583115066239879169681269, 9.107735829970857706936675027245, 9.919702445885858877180142258118, 10.89154339860195613441988561800

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