Properties

Label 2-1638-1.1-c1-0-2
Degree $2$
Conductor $1638$
Sign $1$
Analytic cond. $13.0794$
Root an. cond. $3.61655$
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-s + 4-s − 2.70·5-s + 7-s − 8-s + 2.70·10-s + 0.701·11-s + 13-s − 14-s + 16-s + 2.70·17-s − 0.701·19-s − 2.70·20-s − 0.701·22-s − 4.70·23-s + 2.29·25-s − 26-s + 28-s − 2.70·29-s − 32-s − 2.70·34-s − 2.70·35-s + 10.7·37-s + 0.701·38-s + 2.70·40-s − 3.40·41-s − 10.1·43-s + ⋯
L(s)  = 1  − 0.707·2-s + 0.5·4-s − 1.20·5-s + 0.377·7-s − 0.353·8-s + 0.854·10-s + 0.211·11-s + 0.277·13-s − 0.267·14-s + 0.250·16-s + 0.655·17-s − 0.160·19-s − 0.604·20-s − 0.149·22-s − 0.980·23-s + 0.459·25-s − 0.196·26-s + 0.188·28-s − 0.501·29-s − 0.176·32-s − 0.463·34-s − 0.456·35-s + 1.75·37-s + 0.113·38-s + 0.427·40-s − 0.531·41-s − 1.54·43-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1638 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1638 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1638\)    =    \(2 \cdot 3^{2} \cdot 7 \cdot 13\)
Sign: $1$
Analytic conductor: \(13.0794\)
Root analytic conductor: \(3.61655\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 1638,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.9214473246\)
\(L(\frac12)\) \(\approx\) \(0.9214473246\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + T \)
3 \( 1 \)
7 \( 1 - T \)
13 \( 1 - T \)
good5 \( 1 + 2.70T + 5T^{2} \)
11 \( 1 - 0.701T + 11T^{2} \)
17 \( 1 - 2.70T + 17T^{2} \)
19 \( 1 + 0.701T + 19T^{2} \)
23 \( 1 + 4.70T + 23T^{2} \)
29 \( 1 + 2.70T + 29T^{2} \)
31 \( 1 + 31T^{2} \)
37 \( 1 - 10.7T + 37T^{2} \)
41 \( 1 + 3.40T + 41T^{2} \)
43 \( 1 + 10.1T + 43T^{2} \)
47 \( 1 - 8T + 47T^{2} \)
53 \( 1 - 2T + 53T^{2} \)
59 \( 1 - 14.8T + 59T^{2} \)
61 \( 1 - 1.29T + 61T^{2} \)
67 \( 1 - 5.40T + 67T^{2} \)
71 \( 1 - 8T + 71T^{2} \)
73 \( 1 + 1.29T + 73T^{2} \)
79 \( 1 - 9.40T + 79T^{2} \)
83 \( 1 - 13.4T + 83T^{2} \)
89 \( 1 - 8.80T + 89T^{2} \)
97 \( 1 + 8.80T + 97T^{2} \)
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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

−9.344537222605354746516440598843, −8.326669910528247763229586639342, −8.004867483443384992404400146640, −7.24407594614206697231968167030, −6.34308748696953470510688555162, −5.32836360185378698752545882362, −4.15780220342704709779066361846, −3.48011453327739545414674479268, −2.13154137431681508143391707335, −0.74237517806008437822675717051, 0.74237517806008437822675717051, 2.13154137431681508143391707335, 3.48011453327739545414674479268, 4.15780220342704709779066361846, 5.32836360185378698752545882362, 6.34308748696953470510688555162, 7.24407594614206697231968167030, 8.004867483443384992404400146640, 8.326669910528247763229586639342, 9.344537222605354746516440598843

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