Properties

Label 2-855-1.1-c1-0-17
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  + 2.17·2-s + 2.70·4-s + 5-s − 0.539·7-s + 1.53·8-s + 2.17·10-s + 3.17·11-s + 4.87·13-s − 1.17·14-s − 2.07·16-s + 1.36·17-s − 19-s + 2.70·20-s + 6.87·22-s − 2.78·23-s + 25-s + 10.5·26-s − 1.46·28-s + 3.90·29-s − 2.44·31-s − 7.58·32-s + 2.97·34-s − 0.539·35-s − 4.14·37-s − 2.17·38-s + 1.53·40-s + 3.01·41-s + ⋯
L(s)  = 1  + 1.53·2-s + 1.35·4-s + 0.447·5-s − 0.203·7-s + 0.544·8-s + 0.686·10-s + 0.955·11-s + 1.35·13-s − 0.312·14-s − 0.519·16-s + 0.332·17-s − 0.229·19-s + 0.605·20-s + 1.46·22-s − 0.581·23-s + 0.200·25-s + 2.07·26-s − 0.276·28-s + 0.725·29-s − 0.439·31-s − 1.34·32-s + 0.509·34-s − 0.0911·35-s − 0.680·37-s − 0.352·38-s + 0.243·40-s + 0.470·41-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

\(L(1)\) \(\approx\) \(3.917268890\)
\(L(\frac12)\) \(\approx\) \(3.917268890\)
\(L(\frac{3}{2})\) 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 \( 1 - 2.17T + 2T^{2} \)
7 \( 1 + 0.539T + 7T^{2} \)
11 \( 1 - 3.17T + 11T^{2} \)
13 \( 1 - 4.87T + 13T^{2} \)
17 \( 1 - 1.36T + 17T^{2} \)
23 \( 1 + 2.78T + 23T^{2} \)
29 \( 1 - 3.90T + 29T^{2} \)
31 \( 1 + 2.44T + 31T^{2} \)
37 \( 1 + 4.14T + 37T^{2} \)
41 \( 1 - 3.01T + 41T^{2} \)
43 \( 1 - 5.95T + 43T^{2} \)
47 \( 1 + 4.04T + 47T^{2} \)
53 \( 1 - 6.63T + 53T^{2} \)
59 \( 1 + 12.4T + 59T^{2} \)
61 \( 1 + 9.31T + 61T^{2} \)
67 \( 1 + 7.75T + 67T^{2} \)
71 \( 1 - 2.18T + 71T^{2} \)
73 \( 1 + 7.60T + 73T^{2} \)
79 \( 1 + 15.0T + 79T^{2} \)
83 \( 1 - 2.78T + 83T^{2} \)
89 \( 1 - 0.829T + 89T^{2} \)
97 \( 1 + 5.37T + 97T^{2} \)
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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

−10.42451204857941583339390214324, −9.305637220764868101314956437651, −8.571929981152227910014317445156, −7.23452881692479586839963732580, −6.15878017033444294061154119031, −5.99248299799533300705343977920, −4.71468501011512977055705515243, −3.86790672514301498744926717211, −3.04243558760489005769782222941, −1.61613616590321490615180463633, 1.61613616590321490615180463633, 3.04243558760489005769782222941, 3.86790672514301498744926717211, 4.71468501011512977055705515243, 5.99248299799533300705343977920, 6.15878017033444294061154119031, 7.23452881692479586839963732580, 8.571929981152227910014317445156, 9.305637220764868101314956437651, 10.42451204857941583339390214324

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