Properties

Label 2-639-1.1-c1-0-27
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 $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 1.61·2-s + 0.618·4-s − 1.61·5-s − 3·7-s − 2.23·8-s − 2.61·10-s − 0.236·11-s − 5.85·13-s − 4.85·14-s − 4.85·16-s + 2.23·17-s − 1.76·19-s − 1.00·20-s − 0.381·22-s + 7.09·23-s − 2.38·25-s − 9.47·26-s − 1.85·28-s + 1.85·29-s − 2·31-s − 3.38·32-s + 3.61·34-s + 4.85·35-s + 11.5·37-s − 2.85·38-s + 3.61·40-s − 6.38·41-s + ⋯
L(s)  = 1  + 1.14·2-s + 0.309·4-s − 0.723·5-s − 1.13·7-s − 0.790·8-s − 0.827·10-s − 0.0711·11-s − 1.62·13-s − 1.29·14-s − 1.21·16-s + 0.542·17-s − 0.404·19-s − 0.223·20-s − 0.0814·22-s + 1.47·23-s − 0.476·25-s − 1.85·26-s − 0.350·28-s + 0.344·29-s − 0.359·31-s − 0.597·32-s + 0.620·34-s + 0.820·35-s + 1.90·37-s − 0.462·38-s + 0.572·40-s − 0.996·41-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: \(1\)
Selberg data: \((2,\ 639,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) 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 \( 1 - 1.61T + 2T^{2} \)
5 \( 1 + 1.61T + 5T^{2} \)
7 \( 1 + 3T + 7T^{2} \)
11 \( 1 + 0.236T + 11T^{2} \)
13 \( 1 + 5.85T + 13T^{2} \)
17 \( 1 - 2.23T + 17T^{2} \)
19 \( 1 + 1.76T + 19T^{2} \)
23 \( 1 - 7.09T + 23T^{2} \)
29 \( 1 - 1.85T + 29T^{2} \)
31 \( 1 + 2T + 31T^{2} \)
37 \( 1 - 11.5T + 37T^{2} \)
41 \( 1 + 6.38T + 41T^{2} \)
43 \( 1 + 11.5T + 43T^{2} \)
47 \( 1 + 5.32T + 47T^{2} \)
53 \( 1 + 4.09T + 53T^{2} \)
59 \( 1 - 6.70T + 59T^{2} \)
61 \( 1 - 6.70T + 61T^{2} \)
67 \( 1 + 2.90T + 67T^{2} \)
73 \( 1 + 2.76T + 73T^{2} \)
79 \( 1 + 6.09T + 79T^{2} \)
83 \( 1 - 3T + 83T^{2} \)
89 \( 1 + 12.7T + 89T^{2} \)
97 \( 1 + 14.5T + 97T^{2} \)
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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

−10.01433945052173829101299790171, −9.477598728334946657290459093244, −8.321530003034194659654683543250, −7.20292277793836895534928404363, −6.47236788248467860521252368150, −5.32901855316462828459140486812, −4.54449965267009450713520485621, −3.48004723867283049595608241912, −2.72720031897252372055370070745, 0, 2.72720031897252372055370070745, 3.48004723867283049595608241912, 4.54449965267009450713520485621, 5.32901855316462828459140486812, 6.47236788248467860521252368150, 7.20292277793836895534928404363, 8.321530003034194659654683543250, 9.477598728334946657290459093244, 10.01433945052173829101299790171

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