Properties

Label 2-639-71.70-c0-0-1
Degree $2$
Conductor $639$
Sign $1$
Analytic cond. $0.318902$
Root an. cond. $0.564714$
Motivic weight $0$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 0.445·2-s − 0.801·4-s + 1.80·5-s − 0.801·8-s + 0.801·10-s + 0.445·16-s − 0.445·19-s − 1.44·20-s + 2.24·25-s − 1.24·29-s + 32-s − 0.445·37-s − 0.198·38-s − 1.44·40-s − 1.80·43-s + 49-s + 50-s − 0.554·58-s − 71-s − 1.80·73-s − 0.198·74-s + 0.356·76-s − 1.80·79-s + 0.801·80-s + 0.445·83-s − 0.801·86-s − 1.24·89-s + ⋯
L(s)  = 1  + 0.445·2-s − 0.801·4-s + 1.80·5-s − 0.801·8-s + 0.801·10-s + 0.445·16-s − 0.445·19-s − 1.44·20-s + 2.24·25-s − 1.24·29-s + 32-s − 0.445·37-s − 0.198·38-s − 1.44·40-s − 1.80·43-s + 49-s + 50-s − 0.554·58-s − 71-s − 1.80·73-s − 0.198·74-s + 0.356·76-s − 1.80·79-s + 0.801·80-s + 0.445·83-s − 0.801·86-s − 1.24·89-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(639\)    =    \(3^{2} \cdot 71\)
Sign: $1$
Analytic conductor: \(0.318902\)
Root analytic conductor: \(0.564714\)
Motivic weight: \(0\)
Rational: no
Arithmetic: yes
Character: $\chi_{639} (496, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 639,\ (\ :0),\ 1)\)

Particular Values

\(L(\frac{1}{2})\) \(\approx\) \(1.207028707\)
\(L(\frac12)\) \(\approx\) \(1.207028707\)
\(L(1)\) 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 \( 1 - 0.445T + T^{2} \)
5 \( 1 - 1.80T + T^{2} \)
7 \( 1 - T^{2} \)
11 \( 1 - T^{2} \)
13 \( 1 - T^{2} \)
17 \( 1 - T^{2} \)
19 \( 1 + 0.445T + T^{2} \)
23 \( 1 - T^{2} \)
29 \( 1 + 1.24T + T^{2} \)
31 \( 1 - T^{2} \)
37 \( 1 + 0.445T + T^{2} \)
41 \( 1 - T^{2} \)
43 \( 1 + 1.80T + T^{2} \)
47 \( 1 - T^{2} \)
53 \( 1 - T^{2} \)
59 \( 1 - T^{2} \)
61 \( 1 - T^{2} \)
67 \( 1 - T^{2} \)
73 \( 1 + 1.80T + T^{2} \)
79 \( 1 + 1.80T + T^{2} \)
83 \( 1 - 0.445T + T^{2} \)
89 \( 1 + 1.24T + T^{2} \)
97 \( 1 - T^{2} \)
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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

−10.50459529394021378671043971772, −9.889211950552135803505378522995, −9.146777271039715882952195593566, −8.486252079886083166878407002878, −7.01065521827902659158644931458, −5.94983306036910194011291288850, −5.44912832043962092066970112486, −4.43567647761754511569812735999, −3.08842507256238758207915794763, −1.77073079791246240609274844577, 1.77073079791246240609274844577, 3.08842507256238758207915794763, 4.43567647761754511569812735999, 5.44912832043962092066970112486, 5.94983306036910194011291288850, 7.01065521827902659158644931458, 8.486252079886083166878407002878, 9.146777271039715882952195593566, 9.889211950552135803505378522995, 10.50459529394021378671043971772

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