Properties

Label 2-931-1.1-c1-0-54
Degree $2$
Conductor $931$
Sign $-1$
Analytic cond. $7.43407$
Root an. cond. $2.72654$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 0.291·2-s + 2.43·3-s − 1.91·4-s − 2.06·5-s + 0.708·6-s − 1.14·8-s + 2.91·9-s − 0.601·10-s − 4.94·11-s − 4.65·12-s + 1.62·13-s − 5.02·15-s + 3.49·16-s − 6.99·17-s + 0.849·18-s + 19-s + 3.95·20-s − 1.44·22-s − 7.41·23-s − 2.77·24-s − 0.732·25-s + 0.473·26-s − 0.206·27-s + 3.88·29-s − 1.46·30-s + 0.808·31-s + 3.30·32-s + ⋯
L(s)  = 1  + 0.206·2-s + 1.40·3-s − 0.957·4-s − 0.923·5-s + 0.289·6-s − 0.403·8-s + 0.971·9-s − 0.190·10-s − 1.49·11-s − 1.34·12-s + 0.450·13-s − 1.29·15-s + 0.874·16-s − 1.69·17-s + 0.200·18-s + 0.229·19-s + 0.884·20-s − 0.307·22-s − 1.54·23-s − 0.566·24-s − 0.146·25-s + 0.0927·26-s − 0.0397·27-s + 0.721·29-s − 0.267·30-s + 0.145·31-s + 0.583·32-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 931 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 931 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(931\)    =    \(7^{2} \cdot 19\)
Sign: $-1$
Analytic conductor: \(7.43407\)
Root analytic conductor: \(2.72654\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 931,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 \)
19 \( 1 - T \)
good2 \( 1 - 0.291T + 2T^{2} \)
3 \( 1 - 2.43T + 3T^{2} \)
5 \( 1 + 2.06T + 5T^{2} \)
11 \( 1 + 4.94T + 11T^{2} \)
13 \( 1 - 1.62T + 13T^{2} \)
17 \( 1 + 6.99T + 17T^{2} \)
23 \( 1 + 7.41T + 23T^{2} \)
29 \( 1 - 3.88T + 29T^{2} \)
31 \( 1 - 0.808T + 31T^{2} \)
37 \( 1 - 4.10T + 37T^{2} \)
41 \( 1 + 8.50T + 41T^{2} \)
43 \( 1 - 7.31T + 43T^{2} \)
47 \( 1 + 5.41T + 47T^{2} \)
53 \( 1 + 1.99T + 53T^{2} \)
59 \( 1 + 5.75T + 59T^{2} \)
61 \( 1 + 11.3T + 61T^{2} \)
67 \( 1 - 13.9T + 67T^{2} \)
71 \( 1 - 6.51T + 71T^{2} \)
73 \( 1 + 2.08T + 73T^{2} \)
79 \( 1 + 2.31T + 79T^{2} \)
83 \( 1 - 5.01T + 83T^{2} \)
89 \( 1 - 6.69T + 89T^{2} \)
97 \( 1 - 14.0T + 97T^{2} \)
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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

−9.461284297428398745015148974455, −8.593085408067978987643885427231, −8.126640982739596599643063355912, −7.60102029932519557285196284378, −6.18248209081781615462126075373, −4.87061666165091352407650187698, −4.11297018263441469232145835419, −3.30840282415389705541618557284, −2.27205231617264581194724814111, 0, 2.27205231617264581194724814111, 3.30840282415389705541618557284, 4.11297018263441469232145835419, 4.87061666165091352407650187698, 6.18248209081781615462126075373, 7.60102029932519557285196284378, 8.126640982739596599643063355912, 8.593085408067978987643885427231, 9.461284297428398745015148974455

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