Properties

Label 2-855-1.1-c1-0-1
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  − 1.48·2-s + 0.193·4-s − 5-s − 3.28·7-s + 2.67·8-s + 1.48·10-s + 2.86·11-s − 7.02·13-s + 4.86·14-s − 4.35·16-s + 1.84·17-s + 19-s − 0.193·20-s − 4.24·22-s − 0.156·23-s + 25-s + 10.4·26-s − 0.637·28-s − 9.18·29-s + 9.50·31-s + 1.09·32-s − 2.73·34-s + 3.28·35-s − 1.36·37-s − 1.48·38-s − 2.67·40-s + 9.05·41-s + ⋯
L(s)  = 1  − 1.04·2-s + 0.0969·4-s − 0.447·5-s − 1.24·7-s + 0.945·8-s + 0.468·10-s + 0.865·11-s − 1.94·13-s + 1.30·14-s − 1.08·16-s + 0.447·17-s + 0.229·19-s − 0.0433·20-s − 0.906·22-s − 0.0325·23-s + 0.200·25-s + 2.04·26-s − 0.120·28-s − 1.70·29-s + 1.70·31-s + 0.193·32-s − 0.468·34-s + 0.555·35-s − 0.223·37-s − 0.240·38-s − 0.422·40-s + 1.41·41-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

\(L(1)\) \(\approx\) \(0.5059950071\)
\(L(\frac12)\) \(\approx\) \(0.5059950071\)
\(L(\frac{3}{2})\) 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 \( 1 + 1.48T + 2T^{2} \)
7 \( 1 + 3.28T + 7T^{2} \)
11 \( 1 - 2.86T + 11T^{2} \)
13 \( 1 + 7.02T + 13T^{2} \)
17 \( 1 - 1.84T + 17T^{2} \)
23 \( 1 + 0.156T + 23T^{2} \)
29 \( 1 + 9.18T + 29T^{2} \)
31 \( 1 - 9.50T + 31T^{2} \)
37 \( 1 + 1.36T + 37T^{2} \)
41 \( 1 - 9.05T + 41T^{2} \)
43 \( 1 - 5.59T + 43T^{2} \)
47 \( 1 - 4.93T + 47T^{2} \)
53 \( 1 - 13.6T + 53T^{2} \)
59 \( 1 - 1.35T + 59T^{2} \)
61 \( 1 + 1.76T + 61T^{2} \)
67 \( 1 + 11.2T + 67T^{2} \)
71 \( 1 - 6.96T + 71T^{2} \)
73 \( 1 - 2.57T + 73T^{2} \)
79 \( 1 - 8.18T + 79T^{2} \)
83 \( 1 + 8.46T + 83T^{2} \)
89 \( 1 - 8.16T + 89T^{2} \)
97 \( 1 - 7.98T + 97T^{2} \)
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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

−9.782824091161358929434273326621, −9.533182216748146724307524685850, −8.698823896756403412852180295935, −7.48190064251216947421290971650, −7.22769828669111755018584315854, −6.00890703600252494531148289968, −4.72593415863024615621178334965, −3.75112131034574924967399660589, −2.43829963064028097798459743381, −0.65463117153190541741788343508, 0.65463117153190541741788343508, 2.43829963064028097798459743381, 3.75112131034574924967399660589, 4.72593415863024615621178334965, 6.00890703600252494531148289968, 7.22769828669111755018584315854, 7.48190064251216947421290971650, 8.698823896756403412852180295935, 9.533182216748146724307524685850, 9.782824091161358929434273326621

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