Properties

Label 2-931-1.1-c1-0-1
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 $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 1.40·2-s − 3.19·3-s − 0.0217·4-s − 0.295·5-s + 4.49·6-s + 2.84·8-s + 7.20·9-s + 0.415·10-s − 0.372·11-s + 0.0694·12-s − 3.46·13-s + 0.944·15-s − 3.95·16-s − 3.29·17-s − 10.1·18-s − 19-s + 0.00643·20-s + 0.524·22-s − 7.41·23-s − 9.08·24-s − 4.91·25-s + 4.87·26-s − 13.4·27-s + 3.21·29-s − 1.32·30-s + 3.96·31-s − 0.123·32-s + ⋯
L(s)  = 1  − 0.994·2-s − 1.84·3-s − 0.0108·4-s − 0.132·5-s + 1.83·6-s + 1.00·8-s + 2.40·9-s + 0.131·10-s − 0.112·11-s + 0.0200·12-s − 0.962·13-s + 0.243·15-s − 0.989·16-s − 0.799·17-s − 2.38·18-s − 0.229·19-s + 0.00143·20-s + 0.111·22-s − 1.54·23-s − 1.85·24-s − 0.982·25-s + 0.956·26-s − 2.58·27-s + 0.597·29-s − 0.242·30-s + 0.712·31-s − 0.0217·32-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: \(0\)
Selberg data: \((2,\ 931,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.2245186166\)
\(L(\frac12)\) \(\approx\) \(0.2245186166\)
\(L(\frac{3}{2})\) 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 \( 1 + 1.40T + 2T^{2} \)
3 \( 1 + 3.19T + 3T^{2} \)
5 \( 1 + 0.295T + 5T^{2} \)
11 \( 1 + 0.372T + 11T^{2} \)
13 \( 1 + 3.46T + 13T^{2} \)
17 \( 1 + 3.29T + 17T^{2} \)
23 \( 1 + 7.41T + 23T^{2} \)
29 \( 1 - 3.21T + 29T^{2} \)
31 \( 1 - 3.96T + 31T^{2} \)
37 \( 1 - 9.83T + 37T^{2} \)
41 \( 1 + 2.81T + 41T^{2} \)
43 \( 1 + 6.08T + 43T^{2} \)
47 \( 1 + 6.82T + 47T^{2} \)
53 \( 1 - 10.4T + 53T^{2} \)
59 \( 1 - 4.68T + 59T^{2} \)
61 \( 1 + 7.09T + 61T^{2} \)
67 \( 1 + 7.66T + 67T^{2} \)
71 \( 1 - 1.88T + 71T^{2} \)
73 \( 1 - 1.01T + 73T^{2} \)
79 \( 1 + 10.6T + 79T^{2} \)
83 \( 1 - 12.3T + 83T^{2} \)
89 \( 1 - 6.18T + 89T^{2} \)
97 \( 1 - 0.235T + 97T^{2} \)
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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

−10.04937744778042793990583330902, −9.634918809832754639160964395878, −8.324030988194300629352162991660, −7.53596606519734735261624416400, −6.67137462746855371338861932999, −5.85309350132070740248440589553, −4.77471403617911288026437956823, −4.24220502466199952309004201093, −1.94082089896720299647658915095, −0.46960085043576933470813815231, 0.46960085043576933470813815231, 1.94082089896720299647658915095, 4.24220502466199952309004201093, 4.77471403617911288026437956823, 5.85309350132070740248440589553, 6.67137462746855371338861932999, 7.53596606519734735261624416400, 8.324030988194300629352162991660, 9.634918809832754639160964395878, 10.04937744778042793990583330902

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