Properties

Label 2-931-1.1-c1-0-39
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  + 2.68·2-s + 1.11·3-s + 5.20·4-s − 2.50·5-s + 2.99·6-s + 8.59·8-s − 1.75·9-s − 6.71·10-s + 3.90·11-s + 5.80·12-s + 3.81·13-s − 2.79·15-s + 12.6·16-s + 0.499·17-s − 4.70·18-s + 19-s − 13.0·20-s + 10.4·22-s − 6.75·23-s + 9.59·24-s + 1.25·25-s + 10.2·26-s − 5.30·27-s + 1.90·29-s − 7.49·30-s − 4.15·31-s + 16.7·32-s + ⋯
L(s)  = 1  + 1.89·2-s + 0.644·3-s + 2.60·4-s − 1.11·5-s + 1.22·6-s + 3.03·8-s − 0.584·9-s − 2.12·10-s + 1.17·11-s + 1.67·12-s + 1.05·13-s − 0.721·15-s + 3.16·16-s + 0.121·17-s − 1.10·18-s + 0.229·19-s − 2.90·20-s + 2.23·22-s − 1.40·23-s + 1.95·24-s + 0.250·25-s + 2.00·26-s − 1.02·27-s + 0.354·29-s − 1.36·30-s − 0.745·31-s + 2.96·32-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

\(L(1)\) \(\approx\) \(5.284172105\)
\(L(\frac12)\) \(\approx\) \(5.284172105\)
\(L(\frac{3}{2})\) 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 \( 1 - 2.68T + 2T^{2} \)
3 \( 1 - 1.11T + 3T^{2} \)
5 \( 1 + 2.50T + 5T^{2} \)
11 \( 1 - 3.90T + 11T^{2} \)
13 \( 1 - 3.81T + 13T^{2} \)
17 \( 1 - 0.499T + 17T^{2} \)
23 \( 1 + 6.75T + 23T^{2} \)
29 \( 1 - 1.90T + 29T^{2} \)
31 \( 1 + 4.15T + 31T^{2} \)
37 \( 1 + 3.45T + 37T^{2} \)
41 \( 1 + 5.36T + 41T^{2} \)
43 \( 1 + 5.67T + 43T^{2} \)
47 \( 1 - 11.7T + 47T^{2} \)
53 \( 1 + 0.368T + 53T^{2} \)
59 \( 1 + 3.72T + 59T^{2} \)
61 \( 1 + 9.33T + 61T^{2} \)
67 \( 1 + 8.24T + 67T^{2} \)
71 \( 1 - 0.281T + 71T^{2} \)
73 \( 1 + 10.8T + 73T^{2} \)
79 \( 1 - 10.4T + 79T^{2} \)
83 \( 1 - 6.71T + 83T^{2} \)
89 \( 1 - 6.27T + 89T^{2} \)
97 \( 1 + 0.490T + 97T^{2} \)
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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

−10.49656844675585511405238828894, −9.033122148166502753389320742305, −8.131483052434592085056101128485, −7.36408179985708926631947555861, −6.37246073556090937658271404991, −5.68385004507807532686329733480, −4.40721342984398416351842854816, −3.70855216487150237984231758415, −3.24435526331884126104964809818, −1.82109391442292736305464424397, 1.82109391442292736305464424397, 3.24435526331884126104964809818, 3.70855216487150237984231758415, 4.40721342984398416351842854816, 5.68385004507807532686329733480, 6.37246073556090937658271404991, 7.36408179985708926631947555861, 8.131483052434592085056101128485, 9.033122148166502753389320742305, 10.49656844675585511405238828894

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