Properties

Label 2-231-231.230-c0-0-1
Degree $2$
Conductor $231$
Sign $1$
Analytic cond. $0.115284$
Root an. cond. $0.339535$
Motivic weight $0$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 2-s + 3-s − 5-s − 6-s + 7-s + 8-s + 9-s + 10-s + 11-s − 13-s − 14-s − 15-s − 16-s − 18-s − 19-s + 21-s − 22-s + 24-s + 26-s + 27-s − 29-s + 30-s + 33-s − 35-s − 37-s + 38-s − 39-s + ⋯
L(s)  = 1  − 2-s + 3-s − 5-s − 6-s + 7-s + 8-s + 9-s + 10-s + 11-s − 13-s − 14-s − 15-s − 16-s − 18-s − 19-s + 21-s − 22-s + 24-s + 26-s + 27-s − 29-s + 30-s + 33-s − 35-s − 37-s + 38-s − 39-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(231\)    =    \(3 \cdot 7 \cdot 11\)
Sign: $1$
Analytic conductor: \(0.115284\)
Root analytic conductor: \(0.339535\)
Motivic weight: \(0\)
Rational: yes
Arithmetic: yes
Character: $\chi_{231} (230, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 231,\ (\ :0),\ 1)\)

Particular Values

\(L(\frac{1}{2})\) \(\approx\) \(0.5463888160\)
\(L(\frac12)\) \(\approx\) \(0.5463888160\)
\(L(1)\) 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 \( 1 + T + T^{2} \)
5 \( 1 + T + T^{2} \)
13 \( 1 + T + T^{2} \)
17 \( ( 1 - T )( 1 + T ) \)
19 \( 1 + T + T^{2} \)
23 \( ( 1 - T )( 1 + T ) \)
29 \( 1 + T + T^{2} \)
31 \( ( 1 - T )( 1 + T ) \)
37 \( 1 + T + T^{2} \)
41 \( ( 1 - T )( 1 + T ) \)
43 \( ( 1 - T )( 1 + T ) \)
47 \( 1 + T + T^{2} \)
53 \( ( 1 - T )( 1 + T ) \)
59 \( 1 + T + T^{2} \)
61 \( ( 1 - T )^{2} \)
67 \( 1 + T + T^{2} \)
71 \( ( 1 - T )( 1 + T ) \)
73 \( 1 + T + T^{2} \)
79 \( ( 1 - T )( 1 + T ) \)
83 \( ( 1 - T )( 1 + T ) \)
89 \( ( 1 - T )^{2} \)
97 \( ( 1 - T )( 1 + T ) \)
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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

−12.29034442407078492062218497394, −11.32626141128684342298313487562, −10.27543745623849263688080010589, −9.250662911717608031524448689739, −8.511570339456576439539304105406, −7.78841790295682962863972826426, −7.05736954382049469435335613157, −4.71646995003231050683413418513, −3.86731545897061647676023954686, −1.84481602371897264273698743490, 1.84481602371897264273698743490, 3.86731545897061647676023954686, 4.71646995003231050683413418513, 7.05736954382049469435335613157, 7.78841790295682962863972826426, 8.511570339456576439539304105406, 9.250662911717608031524448689739, 10.27543745623849263688080010589, 11.32626141128684342298313487562, 12.29034442407078492062218497394

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