Properties

Label 2-1785-1.1-c1-0-20
Degree $2$
Conductor $1785$
Sign $1$
Analytic cond. $14.2532$
Root an. cond. $3.77535$
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 − 3-s − 4-s + 5-s + 6-s + 7-s + 3·8-s + 9-s − 10-s + 4·11-s + 12-s + 2·13-s − 14-s − 15-s − 16-s + 17-s − 18-s + 8·19-s − 20-s − 21-s − 4·22-s − 4·23-s − 3·24-s + 25-s − 2·26-s − 27-s − 28-s + ⋯
L(s)  = 1  − 0.707·2-s − 0.577·3-s − 1/2·4-s + 0.447·5-s + 0.408·6-s + 0.377·7-s + 1.06·8-s + 1/3·9-s − 0.316·10-s + 1.20·11-s + 0.288·12-s + 0.554·13-s − 0.267·14-s − 0.258·15-s − 1/4·16-s + 0.242·17-s − 0.235·18-s + 1.83·19-s − 0.223·20-s − 0.218·21-s − 0.852·22-s − 0.834·23-s − 0.612·24-s + 1/5·25-s − 0.392·26-s − 0.192·27-s − 0.188·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1785 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1785 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1785\)    =    \(3 \cdot 5 \cdot 7 \cdot 17\)
Sign: $1$
Analytic conductor: \(14.2532\)
Root analytic conductor: \(3.77535\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 1785,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.115916506\)
\(L(\frac12)\) \(\approx\) \(1.115916506\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 + T \)
5 \( 1 - T \)
7 \( 1 - T \)
17 \( 1 - T \)
good2 \( 1 + T + p T^{2} \)
11 \( 1 - 4 T + p T^{2} \)
13 \( 1 - 2 T + p T^{2} \)
19 \( 1 - 8 T + p T^{2} \)
23 \( 1 + 4 T + p T^{2} \)
29 \( 1 - 2 T + p T^{2} \)
31 \( 1 + 8 T + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 + 6 T + p T^{2} \)
43 \( 1 - 4 T + p T^{2} \)
47 \( 1 - 4 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 - 12 T + p T^{2} \)
61 \( 1 + 2 T + p T^{2} \)
67 \( 1 + 12 T + p T^{2} \)
71 \( 1 + 8 T + p T^{2} \)
73 \( 1 + 14 T + p T^{2} \)
79 \( 1 - 4 T + p T^{2} \)
83 \( 1 + p T^{2} \)
89 \( 1 - 14 T + p T^{2} \)
97 \( 1 - 2 T + p T^{2} \)
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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

−9.213215334459086454368323905959, −8.769434477106699803451013033970, −7.69394756109943737049040444836, −7.09758972574331154862281007507, −5.97472813616123713126474027598, −5.34866038645503835990069704304, −4.36005335587526880135772608306, −3.51083485535847486255358755988, −1.72170475407403070273508753842, −0.918497887799859871071753989408, 0.918497887799859871071753989408, 1.72170475407403070273508753842, 3.51083485535847486255358755988, 4.36005335587526880135772608306, 5.34866038645503835990069704304, 5.97472813616123713126474027598, 7.09758972574331154862281007507, 7.69394756109943737049040444836, 8.769434477106699803451013033970, 9.213215334459086454368323905959

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