Properties

Label 2-628-1.1-c1-0-8
Degree $2$
Conductor $628$
Sign $1$
Analytic cond. $5.01460$
Root an. cond. $2.23933$
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  + 2·3-s + 4·5-s − 7-s + 9-s + 13-s + 8·15-s − 17-s − 2·21-s − 3·23-s + 11·25-s − 4·27-s − 6·31-s − 4·35-s − 3·37-s + 2·39-s − 2·41-s + 5·43-s + 4·45-s − 6·47-s − 6·49-s − 2·51-s + 6·53-s − 3·59-s + 14·61-s − 63-s + 4·65-s + 6·67-s + ⋯
L(s)  = 1  + 1.15·3-s + 1.78·5-s − 0.377·7-s + 1/3·9-s + 0.277·13-s + 2.06·15-s − 0.242·17-s − 0.436·21-s − 0.625·23-s + 11/5·25-s − 0.769·27-s − 1.07·31-s − 0.676·35-s − 0.493·37-s + 0.320·39-s − 0.312·41-s + 0.762·43-s + 0.596·45-s − 0.875·47-s − 6/7·49-s − 0.280·51-s + 0.824·53-s − 0.390·59-s + 1.79·61-s − 0.125·63-s + 0.496·65-s + 0.733·67-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 628 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 628 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(628\)    =    \(2^{2} \cdot 157\)
Sign: $1$
Analytic conductor: \(5.01460\)
Root analytic conductor: \(2.23933\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 628,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.643924654\)
\(L(\frac12)\) \(\approx\) \(2.643924654\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$Isogeny Class over $\mathbf{F}_p$
bad2 \( 1 \)
157 \( 1 + T \)
good3 \( 1 - 2 T + p T^{2} \) 1.3.ac
5 \( 1 - 4 T + p T^{2} \) 1.5.ae
7 \( 1 + T + p T^{2} \) 1.7.b
11 \( 1 + p T^{2} \) 1.11.a
13 \( 1 - T + p T^{2} \) 1.13.ab
17 \( 1 + T + p T^{2} \) 1.17.b
19 \( 1 + p T^{2} \) 1.19.a
23 \( 1 + 3 T + p T^{2} \) 1.23.d
29 \( 1 + p T^{2} \) 1.29.a
31 \( 1 + 6 T + p T^{2} \) 1.31.g
37 \( 1 + 3 T + p T^{2} \) 1.37.d
41 \( 1 + 2 T + p T^{2} \) 1.41.c
43 \( 1 - 5 T + p T^{2} \) 1.43.af
47 \( 1 + 6 T + p T^{2} \) 1.47.g
53 \( 1 - 6 T + p T^{2} \) 1.53.ag
59 \( 1 + 3 T + p T^{2} \) 1.59.d
61 \( 1 - 14 T + p T^{2} \) 1.61.ao
67 \( 1 - 6 T + p T^{2} \) 1.67.ag
71 \( 1 + p T^{2} \) 1.71.a
73 \( 1 - 2 T + p T^{2} \) 1.73.ac
79 \( 1 - 4 T + p T^{2} \) 1.79.ae
83 \( 1 + p T^{2} \) 1.83.a
89 \( 1 + 7 T + p T^{2} \) 1.89.h
97 \( 1 + 12 T + p T^{2} \) 1.97.m
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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

−10.24493022670560792350810929195, −9.613176133662380360659095723198, −9.004575862383982599112358908454, −8.232107019684374222537788129761, −6.98996620066917499593591455989, −6.08593644475255391439556942950, −5.24926294111377476287433302961, −3.70669921189436073695957624365, −2.60774478575569127066437105876, −1.77480808282081288374631928121, 1.77480808282081288374631928121, 2.60774478575569127066437105876, 3.70669921189436073695957624365, 5.24926294111377476287433302961, 6.08593644475255391439556942950, 6.98996620066917499593591455989, 8.232107019684374222537788129761, 9.004575862383982599112358908454, 9.613176133662380360659095723198, 10.24493022670560792350810929195

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