Properties

Label 2-639-1.1-c1-0-4
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  + 0.713·2-s − 1.49·4-s − 3.77·5-s + 1.42·7-s − 2.49·8-s − 2.69·10-s + 4.98·11-s + 2.98·13-s + 1.01·14-s + 1.20·16-s + 6.40·17-s − 2.91·19-s + 5.63·20-s + 3.55·22-s + 4·23-s + 9.26·25-s + 2.12·26-s − 2.12·28-s − 8.26·29-s + 4·31-s + 5.84·32-s + 4.57·34-s − 5.39·35-s − 2.50·37-s − 2.08·38-s + 9.40·40-s − 0.854·41-s + ⋯
L(s)  = 1  + 0.504·2-s − 0.745·4-s − 1.68·5-s + 0.539·7-s − 0.880·8-s − 0.852·10-s + 1.50·11-s + 0.826·13-s + 0.272·14-s + 0.301·16-s + 1.55·17-s − 0.669·19-s + 1.25·20-s + 0.757·22-s + 0.834·23-s + 1.85·25-s + 0.417·26-s − 0.402·28-s − 1.53·29-s + 0.718·31-s + 1.03·32-s + 0.784·34-s − 0.911·35-s − 0.412·37-s − 0.337·38-s + 1.48·40-s − 0.133·41-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

\(L(1)\) \(\approx\) \(1.323859939\)
\(L(\frac12)\) \(\approx\) \(1.323859939\)
\(L(\frac{3}{2})\) 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 \( 1 - 0.713T + 2T^{2} \)
5 \( 1 + 3.77T + 5T^{2} \)
7 \( 1 - 1.42T + 7T^{2} \)
11 \( 1 - 4.98T + 11T^{2} \)
13 \( 1 - 2.98T + 13T^{2} \)
17 \( 1 - 6.40T + 17T^{2} \)
19 \( 1 + 2.91T + 19T^{2} \)
23 \( 1 - 4T + 23T^{2} \)
29 \( 1 + 8.26T + 29T^{2} \)
31 \( 1 - 4T + 31T^{2} \)
37 \( 1 + 2.50T + 37T^{2} \)
41 \( 1 + 0.854T + 41T^{2} \)
43 \( 1 - 7.20T + 43T^{2} \)
47 \( 1 - 4.40T + 47T^{2} \)
53 \( 1 + 3.96T + 53T^{2} \)
59 \( 1 - 5.55T + 59T^{2} \)
61 \( 1 - 6.85T + 61T^{2} \)
67 \( 1 - 0.981T + 67T^{2} \)
73 \( 1 - 5.36T + 73T^{2} \)
79 \( 1 - 0.350T + 79T^{2} \)
83 \( 1 - 8.06T + 83T^{2} \)
89 \( 1 + 5.69T + 89T^{2} \)
97 \( 1 - 6.57T + 97T^{2} \)
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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

−10.89449309510614652453401633217, −9.526985738472985775008794407701, −8.679857435052978383422059609522, −8.074960814642490337499440913013, −7.11213222981206481197070802336, −5.92356118296599512684480884758, −4.78248823164934509074083745368, −3.88229310829785911376995900042, −3.47300824556356416896945052126, −0.987125445978223462941328083382, 0.987125445978223462941328083382, 3.47300824556356416896945052126, 3.88229310829785911376995900042, 4.78248823164934509074083745368, 5.92356118296599512684480884758, 7.11213222981206481197070802336, 8.074960814642490337499440913013, 8.679857435052978383422059609522, 9.526985738472985775008794407701, 10.89449309510614652453401633217

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