Properties

Label 2-31-31.30-c0-0-0
Degree $2$
Conductor $31$
Sign $1$
Analytic cond. $0.0154710$
Root an. cond. $0.124382$
Motivic weight $0$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

Downloads

Learn more

Normalization:  

Dirichlet series

L(s)  = 1  − 2-s − 5-s − 7-s + 8-s + 9-s + 10-s + 14-s − 16-s − 18-s − 19-s + 31-s + 35-s + 38-s − 40-s − 41-s − 45-s + 2·47-s − 56-s − 59-s − 62-s − 63-s + 64-s + 2·67-s − 70-s − 71-s + 72-s + 80-s + ⋯
L(s)  = 1  − 2-s − 5-s − 7-s + 8-s + 9-s + 10-s + 14-s − 16-s − 18-s − 19-s + 31-s + 35-s + 38-s − 40-s − 41-s − 45-s + 2·47-s − 56-s − 59-s − 62-s − 63-s + 64-s + 2·67-s − 70-s − 71-s + 72-s + 80-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 31 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 31 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(31\)
Sign: $1$
Analytic conductor: \(0.0154710\)
Root analytic conductor: \(0.124382\)
Motivic weight: \(0\)
Rational: yes
Arithmetic: yes
Character: $\chi_{31} (30, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 31,\ (\ :0),\ 1)\)

Particular Values

\(L(\frac{1}{2})\) \(\approx\) \(0.2177494736\)
\(L(\frac12)\) \(\approx\) \(0.2177494736\)
\(L(1)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad31 \( 1 - T \)
good2 \( 1 + T + T^{2} \)
3 \( ( 1 - T )( 1 + T ) \)
5 \( 1 + T + T^{2} \)
7 \( 1 + T + T^{2} \)
11 \( ( 1 - T )( 1 + T ) \)
13 \( ( 1 - T )( 1 + T ) \)
17 \( ( 1 - T )( 1 + T ) \)
19 \( 1 + T + T^{2} \)
23 \( ( 1 - T )( 1 + T ) \)
29 \( ( 1 - T )( 1 + T ) \)
37 \( ( 1 - T )( 1 + T ) \)
41 \( 1 + T + T^{2} \)
43 \( ( 1 - T )( 1 + T ) \)
47 \( ( 1 - T )^{2} \)
53 \( ( 1 - T )( 1 + T ) \)
59 \( 1 + T + T^{2} \)
61 \( ( 1 - T )( 1 + T ) \)
67 \( ( 1 - T )^{2} \)
71 \( 1 + T + T^{2} \)
73 \( ( 1 - T )( 1 + T ) \)
79 \( ( 1 - T )( 1 + T ) \)
83 \( ( 1 - T )( 1 + T ) \)
89 \( ( 1 - T )( 1 + T ) \)
97 \( 1 + T + T^{2} \)
show more
show less
   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{2} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−17.30044677342347514916214466508, −16.18729920448603777480556373415, −15.36955016827026145573435350782, −13.47643814207973877644675198519, −12.31888813921751727125231993793, −10.63965438412188612144155604195, −9.568262511391337160706292941451, −8.198165198685797618624379681819, −6.92572000323394459470037275402, −4.16621475268391289462455833400, 4.16621475268391289462455833400, 6.92572000323394459470037275402, 8.198165198685797618624379681819, 9.568262511391337160706292941451, 10.63965438412188612144155604195, 12.31888813921751727125231993793, 13.47643814207973877644675198519, 15.36955016827026145573435350782, 16.18729920448603777480556373415, 17.30044677342347514916214466508

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