Properties

Label 2-931-1.1-c1-0-4
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  − 0.812·2-s + 0.415·3-s − 1.33·4-s − 2.67·5-s − 0.337·6-s + 2.71·8-s − 2.82·9-s + 2.17·10-s − 0.776·11-s − 0.556·12-s − 3.59·13-s − 1.11·15-s + 0.473·16-s + 0.325·17-s + 2.29·18-s + 19-s + 3.58·20-s + 0.630·22-s + 7.39·23-s + 1.12·24-s + 2.15·25-s + 2.92·26-s − 2.42·27-s − 3.12·29-s + 0.902·30-s + 2.63·31-s − 5.81·32-s + ⋯
L(s)  = 1  − 0.574·2-s + 0.239·3-s − 0.669·4-s − 1.19·5-s − 0.137·6-s + 0.959·8-s − 0.942·9-s + 0.687·10-s − 0.234·11-s − 0.160·12-s − 0.998·13-s − 0.286·15-s + 0.118·16-s + 0.0789·17-s + 0.541·18-s + 0.229·19-s + 0.801·20-s + 0.134·22-s + 1.54·23-s + 0.230·24-s + 0.430·25-s + 0.573·26-s − 0.465·27-s − 0.580·29-s + 0.164·30-s + 0.473·31-s − 1.02·32-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

\(L(1)\) \(\approx\) \(0.5758274255\)
\(L(\frac12)\) \(\approx\) \(0.5758274255\)
\(L(\frac{3}{2})\) 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 \( 1 + 0.812T + 2T^{2} \)
3 \( 1 - 0.415T + 3T^{2} \)
5 \( 1 + 2.67T + 5T^{2} \)
11 \( 1 + 0.776T + 11T^{2} \)
13 \( 1 + 3.59T + 13T^{2} \)
17 \( 1 - 0.325T + 17T^{2} \)
23 \( 1 - 7.39T + 23T^{2} \)
29 \( 1 + 3.12T + 29T^{2} \)
31 \( 1 - 2.63T + 31T^{2} \)
37 \( 1 - 5.87T + 37T^{2} \)
41 \( 1 - 1.62T + 41T^{2} \)
43 \( 1 - 6.67T + 43T^{2} \)
47 \( 1 + 2.04T + 47T^{2} \)
53 \( 1 - 8.92T + 53T^{2} \)
59 \( 1 - 8.72T + 59T^{2} \)
61 \( 1 + 7.04T + 61T^{2} \)
67 \( 1 - 12.5T + 67T^{2} \)
71 \( 1 - 14.3T + 71T^{2} \)
73 \( 1 + 13.8T + 73T^{2} \)
79 \( 1 + 3.88T + 79T^{2} \)
83 \( 1 - 8.81T + 83T^{2} \)
89 \( 1 + 5.40T + 89T^{2} \)
97 \( 1 + 16.5T + 97T^{2} \)
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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

−9.854036816013582838983970597774, −9.137138974256685208234451020653, −8.387672023615908331002967338846, −7.74270802182933291950627326000, −7.09778393848928280058578482813, −5.54548236381707960620317772042, −4.69914527883715391285536292688, −3.74263977689528492967746404727, −2.64383526620111414246304809342, −0.63269806377869674564497278628, 0.63269806377869674564497278628, 2.64383526620111414246304809342, 3.74263977689528492967746404727, 4.69914527883715391285536292688, 5.54548236381707960620317772042, 7.09778393848928280058578482813, 7.74270802182933291950627326000, 8.387672023615908331002967338846, 9.137138974256685208234451020653, 9.854036816013582838983970597774

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