Properties

Label 2-855-1.1-c1-0-0
Degree $2$
Conductor $855$
Sign $1$
Analytic cond. $6.82720$
Root an. cond. $2.61289$
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  − 2.64·2-s + 5.00·4-s − 5-s − 3.64·7-s − 7.93·8-s + 2.64·10-s − 5.64·11-s − 5.64·13-s + 9.64·14-s + 11.0·16-s + 4·17-s − 19-s − 5.00·20-s + 14.9·22-s + 1.29·23-s + 25-s + 14.9·26-s − 18.2·28-s + 6.93·29-s + 6·31-s − 13.2·32-s − 10.5·34-s + 3.64·35-s − 1.64·37-s + 2.64·38-s + 7.93·40-s + 4.35·41-s + ⋯
L(s)  = 1  − 1.87·2-s + 2.50·4-s − 0.447·5-s − 1.37·7-s − 2.80·8-s + 0.836·10-s − 1.70·11-s − 1.56·13-s + 2.57·14-s + 2.75·16-s + 0.970·17-s − 0.229·19-s − 1.11·20-s + 3.18·22-s + 0.269·23-s + 0.200·25-s + 2.92·26-s − 3.44·28-s + 1.28·29-s + 1.07·31-s − 2.33·32-s − 1.81·34-s + 0.616·35-s − 0.270·37-s + 0.429·38-s + 1.25·40-s + 0.680·41-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: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 855,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.2688621685\)
\(L(\frac12)\) \(\approx\) \(0.2688621685\)
\(L(\frac{3}{2})\) 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 \( 1 + 2.64T + 2T^{2} \)
7 \( 1 + 3.64T + 7T^{2} \)
11 \( 1 + 5.64T + 11T^{2} \)
13 \( 1 + 5.64T + 13T^{2} \)
17 \( 1 - 4T + 17T^{2} \)
23 \( 1 - 1.29T + 23T^{2} \)
29 \( 1 - 6.93T + 29T^{2} \)
31 \( 1 - 6T + 31T^{2} \)
37 \( 1 + 1.64T + 37T^{2} \)
41 \( 1 - 4.35T + 41T^{2} \)
43 \( 1 - 0.354T + 43T^{2} \)
47 \( 1 + 9.29T + 47T^{2} \)
53 \( 1 + 0.708T + 53T^{2} \)
59 \( 1 + 0.708T + 59T^{2} \)
61 \( 1 + 0.708T + 61T^{2} \)
67 \( 1 - 14.5T + 67T^{2} \)
71 \( 1 - 3.29T + 71T^{2} \)
73 \( 1 - 10T + 73T^{2} \)
79 \( 1 + 14.5T + 79T^{2} \)
83 \( 1 + 6T + 83T^{2} \)
89 \( 1 - 1.06T + 89T^{2} \)
97 \( 1 - 12.9T + 97T^{2} \)
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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

−10.02581513974420537155598790993, −9.579828267433626812097760759297, −8.419923197513881581540426457735, −7.80062728705847226041248418507, −7.11459669919728983154610827023, −6.29703094192450178260044183745, −5.05133025326034824774734512449, −3.08520710724224944364398989554, −2.50442802574960914334913958952, −0.50982924289492545929628281306, 0.50982924289492545929628281306, 2.50442802574960914334913958952, 3.08520710724224944364398989554, 5.05133025326034824774734512449, 6.29703094192450178260044183745, 7.11459669919728983154610827023, 7.80062728705847226041248418507, 8.419923197513881581540426457735, 9.579828267433626812097760759297, 10.02581513974420537155598790993

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