Properties

Label 2-490-1.1-c1-0-4
Degree $2$
Conductor $490$
Sign $1$
Analytic cond. $3.91266$
Root an. cond. $1.97804$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 2-s + 2·3-s + 4-s − 5-s − 2·6-s − 8-s + 9-s + 10-s + 3·11-s + 2·12-s + 13-s − 2·15-s + 16-s + 6·17-s − 18-s + 19-s − 20-s − 3·22-s + 9·23-s − 2·24-s + 25-s − 26-s − 4·27-s + 6·29-s + 2·30-s − 8·31-s − 32-s + ⋯
L(s)  = 1  − 0.707·2-s + 1.15·3-s + 1/2·4-s − 0.447·5-s − 0.816·6-s − 0.353·8-s + 1/3·9-s + 0.316·10-s + 0.904·11-s + 0.577·12-s + 0.277·13-s − 0.516·15-s + 1/4·16-s + 1.45·17-s − 0.235·18-s + 0.229·19-s − 0.223·20-s − 0.639·22-s + 1.87·23-s − 0.408·24-s + 1/5·25-s − 0.196·26-s − 0.769·27-s + 1.11·29-s + 0.365·30-s − 1.43·31-s − 0.176·32-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 490 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 490 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(490\)    =    \(2 \cdot 5 \cdot 7^{2}\)
Sign: $1$
Analytic conductor: \(3.91266\)
Root analytic conductor: \(1.97804\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 490,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.495562027\)
\(L(\frac12)\) \(\approx\) \(1.495562027\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + T \)
5 \( 1 + T \)
7 \( 1 \)
good3 \( 1 - 2 T + p T^{2} \)
11 \( 1 - 3 T + p T^{2} \)
13 \( 1 - T + p T^{2} \)
17 \( 1 - 6 T + p T^{2} \)
19 \( 1 - T + p T^{2} \)
23 \( 1 - 9 T + p T^{2} \)
29 \( 1 - 6 T + p T^{2} \)
31 \( 1 + 8 T + p T^{2} \)
37 \( 1 + 7 T + p T^{2} \)
41 \( 1 + 3 T + p T^{2} \)
43 \( 1 - 2 T + p T^{2} \)
47 \( 1 + 9 T + p T^{2} \)
53 \( 1 - 9 T + p T^{2} \)
59 \( 1 + p T^{2} \)
61 \( 1 + 8 T + p T^{2} \)
67 \( 1 - 8 T + p T^{2} \)
71 \( 1 + p T^{2} \)
73 \( 1 - 4 T + p T^{2} \)
79 \( 1 + 10 T + p T^{2} \)
83 \( 1 + p T^{2} \)
89 \( 1 + 6 T + p T^{2} \)
97 \( 1 - 10 T + p T^{2} \)
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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

−10.85220388593637973259260583500, −9.798827689345313330649644791210, −9.010457226637545219016876721387, −8.450548827953952381413542526812, −7.54406101859650126734454953475, −6.76369810423149837192636154107, −5.32836056092660803329505468492, −3.70177089518065458380414999112, −2.97795101789227046966578807832, −1.36162716037423381102750436717, 1.36162716037423381102750436717, 2.97795101789227046966578807832, 3.70177089518065458380414999112, 5.32836056092660803329505468492, 6.76369810423149837192636154107, 7.54406101859650126734454953475, 8.450548827953952381413542526812, 9.010457226637545219016876721387, 9.798827689345313330649644791210, 10.85220388593637973259260583500

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