Properties

Label 2-20e2-1.1-c3-0-15
Degree $2$
Conductor $400$
Sign $-1$
Analytic cond. $23.6007$
Root an. cond. $4.85806$
Motivic weight $3$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 7·3-s − 6·7-s + 22·9-s + 43·11-s − 28·13-s + 91·17-s + 35·19-s + 42·21-s − 162·23-s + 35·27-s + 160·29-s − 42·31-s − 301·33-s − 314·37-s + 196·39-s − 203·41-s − 92·43-s − 196·47-s − 307·49-s − 637·51-s + 82·53-s − 245·57-s + 280·59-s − 518·61-s − 132·63-s − 141·67-s + 1.13e3·69-s + ⋯
L(s)  = 1  − 1.34·3-s − 0.323·7-s + 0.814·9-s + 1.17·11-s − 0.597·13-s + 1.29·17-s + 0.422·19-s + 0.436·21-s − 1.46·23-s + 0.249·27-s + 1.02·29-s − 0.243·31-s − 1.58·33-s − 1.39·37-s + 0.804·39-s − 0.773·41-s − 0.326·43-s − 0.608·47-s − 0.895·49-s − 1.74·51-s + 0.212·53-s − 0.569·57-s + 0.617·59-s − 1.08·61-s − 0.263·63-s − 0.257·67-s + 1.97·69-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(400\)    =    \(2^{4} \cdot 5^{2}\)
Sign: $-1$
Analytic conductor: \(23.6007\)
Root analytic conductor: \(4.85806\)
Motivic weight: \(3\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 400,\ (\ :3/2),\ -1)\)

Particular Values

\(L(2)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{5}{2})\) 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 \( 1 + 7 T + p^{3} T^{2} \)
7 \( 1 + 6 T + p^{3} T^{2} \)
11 \( 1 - 43 T + p^{3} T^{2} \)
13 \( 1 + 28 T + p^{3} T^{2} \)
17 \( 1 - 91 T + p^{3} T^{2} \)
19 \( 1 - 35 T + p^{3} T^{2} \)
23 \( 1 + 162 T + p^{3} T^{2} \)
29 \( 1 - 160 T + p^{3} T^{2} \)
31 \( 1 + 42 T + p^{3} T^{2} \)
37 \( 1 + 314 T + p^{3} T^{2} \)
41 \( 1 + 203 T + p^{3} T^{2} \)
43 \( 1 + 92 T + p^{3} T^{2} \)
47 \( 1 + 196 T + p^{3} T^{2} \)
53 \( 1 - 82 T + p^{3} T^{2} \)
59 \( 1 - 280 T + p^{3} T^{2} \)
61 \( 1 + 518 T + p^{3} T^{2} \)
67 \( 1 + 141 T + p^{3} T^{2} \)
71 \( 1 + 412 T + p^{3} T^{2} \)
73 \( 1 + 763 T + p^{3} T^{2} \)
79 \( 1 + 510 T + p^{3} T^{2} \)
83 \( 1 + 777 T + p^{3} T^{2} \)
89 \( 1 + 945 T + p^{3} T^{2} \)
97 \( 1 - 1246 T + p^{3} T^{2} \)
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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

−10.28754396716886077703819000128, −9.869811911653664812574021902971, −8.586053463769328319953598024944, −7.32222714076431666876853692306, −6.41799966436075012336124711324, −5.66327171776131042964567790204, −4.64994820290887645973052204966, −3.36679688477165539887942724097, −1.41155040569374532090824542880, 0, 1.41155040569374532090824542880, 3.36679688477165539887942724097, 4.64994820290887645973052204966, 5.66327171776131042964567790204, 6.41799966436075012336124711324, 7.32222714076431666876853692306, 8.586053463769328319953598024944, 9.869811911653664812574021902971, 10.28754396716886077703819000128

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