Properties

Label 2-639-1.1-c1-0-18
Degree $2$
Conductor $639$
Sign $1$
Analytic cond. $5.10244$
Root an. cond. $2.25885$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2.49·2-s + 4.20·4-s − 1.49·5-s + 1.42·7-s + 5.49·8-s − 3.71·10-s + 1.42·11-s + 4·13-s + 3.55·14-s + 5.26·16-s − 1.42·17-s + 3.28·19-s − 6.26·20-s + 3.55·22-s − 8.40·23-s − 2.77·25-s + 9.96·26-s + 5.99·28-s + 3.77·29-s + 2.98·31-s + 2.14·32-s − 3.55·34-s − 2.12·35-s − 3.12·37-s + 8.18·38-s − 8.18·40-s − 5.42·41-s + ⋯
L(s)  = 1  + 1.76·2-s + 2.10·4-s − 0.666·5-s + 0.539·7-s + 1.94·8-s − 1.17·10-s + 0.430·11-s + 1.10·13-s + 0.950·14-s + 1.31·16-s − 0.346·17-s + 0.753·19-s − 1.40·20-s + 0.757·22-s − 1.75·23-s − 0.555·25-s + 1.95·26-s + 1.13·28-s + 0.701·29-s + 0.535·31-s + 0.378·32-s − 0.609·34-s − 0.359·35-s − 0.513·37-s + 1.32·38-s − 1.29·40-s − 0.847·41-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 639 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 639 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(639\)    =    \(3^{2} \cdot 71\)
Sign: $1$
Analytic conductor: \(5.10244\)
Root analytic conductor: \(2.25885\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 639,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(3.944165630\)
\(L(\frac12)\) \(\approx\) \(3.944165630\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 \)
71 \( 1 + T \)
good2 \( 1 - 2.49T + 2T^{2} \)
5 \( 1 + 1.49T + 5T^{2} \)
7 \( 1 - 1.42T + 7T^{2} \)
11 \( 1 - 1.42T + 11T^{2} \)
13 \( 1 - 4T + 13T^{2} \)
17 \( 1 + 1.42T + 17T^{2} \)
19 \( 1 - 3.28T + 19T^{2} \)
23 \( 1 + 8.40T + 23T^{2} \)
29 \( 1 - 3.77T + 29T^{2} \)
31 \( 1 - 2.98T + 31T^{2} \)
37 \( 1 + 3.12T + 37T^{2} \)
41 \( 1 + 5.42T + 41T^{2} \)
43 \( 1 + 3.93T + 43T^{2} \)
47 \( 1 + 2.40T + 47T^{2} \)
53 \( 1 + 4.98T + 53T^{2} \)
59 \( 1 - 6.57T + 59T^{2} \)
61 \( 1 - 6.12T + 61T^{2} \)
67 \( 1 + 13.9T + 67T^{2} \)
73 \( 1 + 1.49T + 73T^{2} \)
79 \( 1 - 14.0T + 79T^{2} \)
83 \( 1 + 7.28T + 83T^{2} \)
89 \( 1 - 5.04T + 89T^{2} \)
97 \( 1 - 5.55T + 97T^{2} \)
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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

−11.07054654150751456702814153608, −10.02528716902680486909776887111, −8.543761440865789507487421945804, −7.75033150869000990107700095254, −6.64615308753169699810206769219, −5.92934253808867245680933229978, −4.86660811620888514279607579787, −4.02630161496223896925951913229, −3.30942772524896953204734872967, −1.79832937123606872317699577714, 1.79832937123606872317699577714, 3.30942772524896953204734872967, 4.02630161496223896925951913229, 4.86660811620888514279607579787, 5.92934253808867245680933229978, 6.64615308753169699810206769219, 7.75033150869000990107700095254, 8.543761440865789507487421945804, 10.02528716902680486909776887111, 11.07054654150751456702814153608

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