Properties

Label 2-855-1.1-c1-0-6
Degree $2$
Conductor $855$
Sign $1$
Analytic cond. $6.82720$
Root an. cond. $2.61289$
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 − 4-s − 5-s + 4·7-s + 3·8-s + 10-s − 4·11-s + 2·13-s − 4·14-s − 16-s − 2·17-s − 19-s + 20-s + 4·22-s + 4·23-s + 25-s − 2·26-s − 4·28-s + 2·29-s − 5·32-s + 2·34-s − 4·35-s − 6·37-s + 38-s − 3·40-s + 6·41-s + 8·43-s + ⋯
L(s)  = 1  − 0.707·2-s − 1/2·4-s − 0.447·5-s + 1.51·7-s + 1.06·8-s + 0.316·10-s − 1.20·11-s + 0.554·13-s − 1.06·14-s − 1/4·16-s − 0.485·17-s − 0.229·19-s + 0.223·20-s + 0.852·22-s + 0.834·23-s + 1/5·25-s − 0.392·26-s − 0.755·28-s + 0.371·29-s − 0.883·32-s + 0.342·34-s − 0.676·35-s − 0.986·37-s + 0.162·38-s − 0.474·40-s + 0.937·41-s + 1.21·43-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 855 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 855 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(855\)    =    \(3^{2} \cdot 5 \cdot 19\)
Sign: $1$
Analytic conductor: \(6.82720\)
Root analytic conductor: \(2.61289\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 855,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.9424032710\)
\(L(\frac12)\) \(\approx\) \(0.9424032710\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 \)
5 \( 1 + T \)
19 \( 1 + T \)
good2 \( 1 + T + p T^{2} \)
7 \( 1 - 4 T + p T^{2} \)
11 \( 1 + 4 T + p T^{2} \)
13 \( 1 - 2 T + p T^{2} \)
17 \( 1 + 2 T + p T^{2} \)
23 \( 1 - 4 T + p T^{2} \)
29 \( 1 - 2 T + p T^{2} \)
31 \( 1 + p T^{2} \)
37 \( 1 + 6 T + p T^{2} \)
41 \( 1 - 6 T + p T^{2} \)
43 \( 1 - 8 T + p T^{2} \)
47 \( 1 - 12 T + p T^{2} \)
53 \( 1 - 14 T + p T^{2} \)
59 \( 1 + 4 T + p T^{2} \)
61 \( 1 - 14 T + p T^{2} \)
67 \( 1 + 4 T + p T^{2} \)
71 \( 1 + p T^{2} \)
73 \( 1 + 14 T + p T^{2} \)
79 \( 1 - 16 T + p T^{2} \)
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

−10.41920253312892486661363622049, −8.997665374443426177370400237956, −8.576861436588155713465515075006, −7.79111029211693930669614606595, −7.22090991652715915706448156971, −5.57442263951836682011583202205, −4.80915338219819536204131275847, −4.00775128266596845974693279239, −2.32830304228468473527730093464, −0.908717833826787650120905118138, 0.908717833826787650120905118138, 2.32830304228468473527730093464, 4.00775128266596845974693279239, 4.80915338219819536204131275847, 5.57442263951836682011583202205, 7.22090991652715915706448156971, 7.79111029211693930669614606595, 8.576861436588155713465515075006, 8.997665374443426177370400237956, 10.41920253312892486661363622049

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