Properties

Label 2-931-1.1-c1-0-18
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  + 1.46·2-s − 2.86·3-s + 0.139·4-s + 3.32·5-s − 4.18·6-s − 2.72·8-s + 5.18·9-s + 4.86·10-s + 1.53·11-s − 0.398·12-s + 3.32·13-s − 9.50·15-s − 4.25·16-s − 5.25·17-s + 7.58·18-s − 19-s + 0.462·20-s + 2.24·22-s + 3.60·23-s + 7.78·24-s + 6.04·25-s + 4.86·26-s − 6.24·27-s + 8.83·29-s − 13.9·30-s + 8.18·31-s − 0.786·32-s + ⋯
L(s)  = 1  + 1.03·2-s − 1.65·3-s + 0.0695·4-s + 1.48·5-s − 1.70·6-s − 0.962·8-s + 1.72·9-s + 1.53·10-s + 0.463·11-s − 0.114·12-s + 0.921·13-s − 2.45·15-s − 1.06·16-s − 1.27·17-s + 1.78·18-s − 0.229·19-s + 0.103·20-s + 0.479·22-s + 0.751·23-s + 1.58·24-s + 1.20·25-s + 0.953·26-s − 1.20·27-s + 1.63·29-s − 2.53·30-s + 1.46·31-s − 0.138·32-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

\(L(1)\) \(\approx\) \(1.835769506\)
\(L(\frac12)\) \(\approx\) \(1.835769506\)
\(L(\frac{3}{2})\) 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 \( 1 - 1.46T + 2T^{2} \)
3 \( 1 + 2.86T + 3T^{2} \)
5 \( 1 - 3.32T + 5T^{2} \)
11 \( 1 - 1.53T + 11T^{2} \)
13 \( 1 - 3.32T + 13T^{2} \)
17 \( 1 + 5.25T + 17T^{2} \)
23 \( 1 - 3.60T + 23T^{2} \)
29 \( 1 - 8.83T + 29T^{2} \)
31 \( 1 - 8.18T + 31T^{2} \)
37 \( 1 - 4.24T + 37T^{2} \)
41 \( 1 - 12.7T + 41T^{2} \)
43 \( 1 + 6.64T + 43T^{2} \)
47 \( 1 - 2.11T + 47T^{2} \)
53 \( 1 + 0.0643T + 53T^{2} \)
59 \( 1 + 3.04T + 59T^{2} \)
61 \( 1 - 1.47T + 61T^{2} \)
67 \( 1 + 2.33T + 67T^{2} \)
71 \( 1 + 0.526T + 71T^{2} \)
73 \( 1 - 0.989T + 73T^{2} \)
79 \( 1 - 0.796T + 79T^{2} \)
83 \( 1 + 10.0T + 83T^{2} \)
89 \( 1 + 5.01T + 89T^{2} \)
97 \( 1 - 17.9T + 97T^{2} \)
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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

−10.28756862439806615983782926010, −9.419193221023425129319024361146, −8.609748496589107946999058196601, −6.68173913454549982499838671414, −6.32510792201401614461429516252, −5.78838727157658911647441803205, −4.85680420899505502383213324538, −4.29109301446686981210878307288, −2.65022006294620398753327706982, −1.06625531540110886793134680305, 1.06625531540110886793134680305, 2.65022006294620398753327706982, 4.29109301446686981210878307288, 4.85680420899505502383213324538, 5.78838727157658911647441803205, 6.32510792201401614461429516252, 6.68173913454549982499838671414, 8.609748496589107946999058196601, 9.419193221023425129319024361146, 10.28756862439806615983782926010

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