Properties

Label 2-20e2-4.3-c4-0-17
Degree $2$
Conductor $400$
Sign $1$
Analytic cond. $41.3479$
Root an. cond. $6.43023$
Motivic weight $4$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 81·9-s − 240·13-s + 480·17-s − 82·29-s − 1.68e3·37-s + 3.03e3·41-s + 2.40e3·49-s + 5.04e3·53-s + 6.95e3·61-s − 1.05e4·73-s + 6.56e3·81-s + 9.75e3·89-s + 1.87e4·97-s + 1.88e4·101-s + 9.36e3·109-s + 6.72e3·113-s − 1.94e4·117-s + ⋯
L(s)  = 1  + 9-s − 1.42·13-s + 1.66·17-s − 0.0975·29-s − 1.22·37-s + 1.80·41-s + 49-s + 1.79·53-s + 1.86·61-s − 1.98·73-s + 81-s + 1.23·89-s + 1.98·97-s + 1.84·101-s + 0.787·109-s + 0.526·113-s − 1.42·117-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(400\)    =    \(2^{4} \cdot 5^{2}\)
Sign: $1$
Analytic conductor: \(41.3479\)
Root analytic conductor: \(6.43023\)
Motivic weight: \(4\)
Rational: yes
Arithmetic: yes
Character: $\chi_{400} (351, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 400,\ (\ :2),\ 1)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(2.131516242\)
\(L(\frac12)\) \(\approx\) \(2.131516242\)
\(L(3)\) 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 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
7 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
11 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
13 \( 1 + 240 T + p^{4} T^{2} \)
17 \( 1 - 480 T + p^{4} T^{2} \)
19 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
23 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
29 \( 1 + 82 T + p^{4} T^{2} \)
31 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
37 \( 1 + 1680 T + p^{4} T^{2} \)
41 \( 1 - 3038 T + p^{4} T^{2} \)
43 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
47 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
53 \( 1 - 5040 T + p^{4} T^{2} \)
59 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
61 \( 1 - 6958 T + p^{4} T^{2} \)
67 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
71 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
73 \( 1 + 10560 T + p^{4} T^{2} \)
79 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
83 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
89 \( 1 - 9758 T + p^{4} T^{2} \)
97 \( 1 - 18720 T + p^{4} T^{2} \)
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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

−10.32067267595884044925400194617, −9.972141020144458450616346842356, −8.913304055456548022307354901062, −7.58889768127112117228466269958, −7.18333084875310016326210334983, −5.76643327709784560833425409257, −4.80043300896772009352313791575, −3.65938538276525892296608058860, −2.28368285350121840787360836465, −0.869698807101025030937098344722, 0.869698807101025030937098344722, 2.28368285350121840787360836465, 3.65938538276525892296608058860, 4.80043300896772009352313791575, 5.76643327709784560833425409257, 7.18333084875310016326210334983, 7.58889768127112117228466269958, 8.913304055456548022307354901062, 9.972141020144458450616346842356, 10.32067267595884044925400194617

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