Properties

Label 2-931-1.1-c1-0-0
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  + 0.269·2-s − 1.39·3-s − 1.92·4-s − 3.37·5-s − 0.377·6-s − 1.05·8-s − 1.04·9-s − 0.911·10-s − 1.57·11-s + 2.69·12-s − 2.85·13-s + 4.72·15-s + 3.56·16-s − 6.37·17-s − 0.281·18-s − 19-s + 6.51·20-s − 0.426·22-s + 2.28·23-s + 1.48·24-s + 6.42·25-s − 0.768·26-s + 5.65·27-s + 8.17·29-s + 1.27·30-s − 4.99·31-s + 3.08·32-s + ⋯
L(s)  = 1  + 0.190·2-s − 0.807·3-s − 0.963·4-s − 1.51·5-s − 0.153·6-s − 0.374·8-s − 0.347·9-s − 0.288·10-s − 0.476·11-s + 0.778·12-s − 0.790·13-s + 1.22·15-s + 0.892·16-s − 1.54·17-s − 0.0663·18-s − 0.229·19-s + 1.45·20-s − 0.0908·22-s + 0.476·23-s + 0.302·24-s + 1.28·25-s − 0.150·26-s + 1.08·27-s + 1.51·29-s + 0.232·30-s − 0.897·31-s + 0.544·32-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

\(L(1)\) \(\approx\) \(0.2670860487\)
\(L(\frac12)\) \(\approx\) \(0.2670860487\)
\(L(\frac{3}{2})\) 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 \( 1 - 0.269T + 2T^{2} \)
3 \( 1 + 1.39T + 3T^{2} \)
5 \( 1 + 3.37T + 5T^{2} \)
11 \( 1 + 1.57T + 11T^{2} \)
13 \( 1 + 2.85T + 13T^{2} \)
17 \( 1 + 6.37T + 17T^{2} \)
23 \( 1 - 2.28T + 23T^{2} \)
29 \( 1 - 8.17T + 29T^{2} \)
31 \( 1 + 4.99T + 31T^{2} \)
37 \( 1 + 10.6T + 37T^{2} \)
41 \( 1 - 0.539T + 41T^{2} \)
43 \( 1 - 2.79T + 43T^{2} \)
47 \( 1 - 9.04T + 47T^{2} \)
53 \( 1 - 2.71T + 53T^{2} \)
59 \( 1 - 9.03T + 59T^{2} \)
61 \( 1 + 6.41T + 61T^{2} \)
67 \( 1 - 0.976T + 67T^{2} \)
71 \( 1 + 10.9T + 71T^{2} \)
73 \( 1 + 3.06T + 73T^{2} \)
79 \( 1 - 0.692T + 79T^{2} \)
83 \( 1 + 4.23T + 83T^{2} \)
89 \( 1 - 4.04T + 89T^{2} \)
97 \( 1 + 15.0T + 97T^{2} \)
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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

−10.33567284921376614507540719534, −8.930855992037741878883741687395, −8.552279691581675412021506433262, −7.52014255219375669390744872053, −6.68362021617558605519586398154, −5.44520935012477249235218645212, −4.73008471518844336383240396338, −4.04460081770474790060966716943, −2.84088758892071107493637263760, −0.39350901278907161403994640454, 0.39350901278907161403994640454, 2.84088758892071107493637263760, 4.04460081770474790060966716943, 4.73008471518844336383240396338, 5.44520935012477249235218645212, 6.68362021617558605519586398154, 7.52014255219375669390744872053, 8.552279691581675412021506433262, 8.930855992037741878883741687395, 10.33567284921376614507540719534

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