Properties

Label 2-231-1.1-c1-0-8
Degree $2$
Conductor $231$
Sign $1$
Analytic cond. $1.84454$
Root an. cond. $1.35814$
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  + 1.61·2-s + 3-s + 0.618·4-s + 5-s + 1.61·6-s + 7-s − 2.23·8-s + 9-s + 1.61·10-s + 11-s + 0.618·12-s − 5.47·13-s + 1.61·14-s + 15-s − 4.85·16-s + 0.763·17-s + 1.61·18-s + 6.70·19-s + 0.618·20-s + 21-s + 1.61·22-s − 7.70·23-s − 2.23·24-s − 4·25-s − 8.85·26-s + 27-s + 0.618·28-s + ⋯
L(s)  = 1  + 1.14·2-s + 0.577·3-s + 0.309·4-s + 0.447·5-s + 0.660·6-s + 0.377·7-s − 0.790·8-s + 0.333·9-s + 0.511·10-s + 0.301·11-s + 0.178·12-s − 1.51·13-s + 0.432·14-s + 0.258·15-s − 1.21·16-s + 0.185·17-s + 0.381·18-s + 1.53·19-s + 0.138·20-s + 0.218·21-s + 0.344·22-s − 1.60·23-s − 0.456·24-s − 0.800·25-s − 1.73·26-s + 0.192·27-s + 0.116·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 231 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 231 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(231\)    =    \(3 \cdot 7 \cdot 11\)
Sign: $1$
Analytic conductor: \(1.84454\)
Root analytic conductor: \(1.35814\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 231,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.383631090\)
\(L(\frac12)\) \(\approx\) \(2.383631090\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 - T \)
7 \( 1 - T \)
11 \( 1 - T \)
good2 \( 1 - 1.61T + 2T^{2} \)
5 \( 1 - T + 5T^{2} \)
13 \( 1 + 5.47T + 13T^{2} \)
17 \( 1 - 0.763T + 17T^{2} \)
19 \( 1 - 6.70T + 19T^{2} \)
23 \( 1 + 7.70T + 23T^{2} \)
29 \( 1 - 5T + 29T^{2} \)
31 \( 1 + 0.763T + 31T^{2} \)
37 \( 1 + 7T + 37T^{2} \)
41 \( 1 - 6.47T + 41T^{2} \)
43 \( 1 + 7.70T + 43T^{2} \)
47 \( 1 + 4.23T + 47T^{2} \)
53 \( 1 - 10.1T + 53T^{2} \)
59 \( 1 - 11.1T + 59T^{2} \)
61 \( 1 - 2T + 61T^{2} \)
67 \( 1 + 14.2T + 67T^{2} \)
71 \( 1 - 6.47T + 71T^{2} \)
73 \( 1 - 13.4T + 73T^{2} \)
79 \( 1 + 5.52T + 79T^{2} \)
83 \( 1 - 11.2T + 83T^{2} \)
89 \( 1 - 4.47T + 89T^{2} \)
97 \( 1 + 3.70T + 97T^{2} \)
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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

−12.16162005777975070071729625160, −11.84397984568412955694849699834, −10.06551283195180995532021266754, −9.455778596234711352130152784998, −8.176539531658907131663210060913, −7.04800587197851484422507878598, −5.70314086406454250044583988535, −4.80904691565255811516487049391, −3.60969118437385846600239433648, −2.29149634956536874671352143062, 2.29149634956536874671352143062, 3.60969118437385846600239433648, 4.80904691565255811516487049391, 5.70314086406454250044583988535, 7.04800587197851484422507878598, 8.176539531658907131663210060913, 9.455778596234711352130152784998, 10.06551283195180995532021266754, 11.84397984568412955694849699834, 12.16162005777975070071729625160

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