Properties

Label 2-18-1.1-c15-0-2
Degree $2$
Conductor $18$
Sign $1$
Analytic cond. $25.6848$
Root an. cond. $5.06802$
Motivic weight $15$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 128·2-s + 1.63e4·4-s + 3.14e5·5-s + 2.02e6·7-s + 2.09e6·8-s + 4.02e7·10-s − 1.10e8·11-s + 5.60e7·13-s + 2.59e8·14-s + 2.68e8·16-s + 1.93e9·17-s + 2.16e9·19-s + 5.15e9·20-s − 1.41e10·22-s − 6.22e9·23-s + 6.83e10·25-s + 7.17e9·26-s + 3.31e10·28-s − 6.47e10·29-s − 2.02e10·31-s + 3.43e10·32-s + 2.47e11·34-s + 6.36e11·35-s + 4.88e11·37-s + 2.76e11·38-s + 6.59e11·40-s + 7.72e11·41-s + ⋯
L(s)  = 1  + 0.707·2-s + 1/2·4-s + 1.80·5-s + 0.929·7-s + 0.353·8-s + 1.27·10-s − 1.70·11-s + 0.247·13-s + 0.657·14-s + 1/4·16-s + 1.14·17-s + 0.555·19-s + 0.900·20-s − 1.20·22-s − 0.381·23-s + 2.24·25-s + 0.175·26-s + 0.464·28-s − 0.696·29-s − 0.132·31-s + 0.176·32-s + 0.806·34-s + 1.67·35-s + 0.846·37-s + 0.392·38-s + 0.636·40-s + 0.619·41-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(16-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s+15/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(18\)    =    \(2 \cdot 3^{2}\)
Sign: $1$
Analytic conductor: \(25.6848\)
Root analytic conductor: \(5.06802\)
Motivic weight: \(15\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 18,\ (\ :15/2),\ 1)\)

Particular Values

\(L(8)\) \(\approx\) \(4.397831836\)
\(L(\frac12)\) \(\approx\) \(4.397831836\)
\(L(\frac{17}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - p^{7} T \)
3 \( 1 \)
good5 \( 1 - 62898 p T + p^{15} T^{2} \)
7 \( 1 - 2025056 T + p^{15} T^{2} \)
11 \( 1 + 110255052 T + p^{15} T^{2} \)
13 \( 1 - 4311374 p T + p^{15} T^{2} \)
17 \( 1 - 1930104414 T + p^{15} T^{2} \)
19 \( 1 - 2163188180 T + p^{15} T^{2} \)
23 \( 1 + 6228974472 T + p^{15} T^{2} \)
29 \( 1 + 64743719070 T + p^{15} T^{2} \)
31 \( 1 + 20237611048 T + p^{15} T^{2} \)
37 \( 1 - 488967594446 T + p^{15} T^{2} \)
41 \( 1 - 772359114198 T + p^{15} T^{2} \)
43 \( 1 - 1306766329292 T + p^{15} T^{2} \)
47 \( 1 + 3351821491776 T + p^{15} T^{2} \)
53 \( 1 + 9387813393702 T + p^{15} T^{2} \)
59 \( 1 + 28930359275340 T + p^{15} T^{2} \)
61 \( 1 - 42393077399702 T + p^{15} T^{2} \)
67 \( 1 + 52247243064364 T + p^{15} T^{2} \)
71 \( 1 - 27194529024648 T + p^{15} T^{2} \)
73 \( 1 + 91604195687878 T + p^{15} T^{2} \)
79 \( 1 - 62882111078120 T + p^{15} T^{2} \)
83 \( 1 - 223567315949868 T + p^{15} T^{2} \)
89 \( 1 + 554198786115210 T + p^{15} T^{2} \)
97 \( 1 + 14318252338942 p T + p^{15} T^{2} \)
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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

−14.66255173747013879490324824232, −13.73691039800623536557749820115, −12.77250750804935101865730088165, −10.92854797118525319698082645922, −9.790113203735723743314501488028, −7.81056503788783160259611549228, −5.85205374965197959692099114443, −5.07613467189564004284936807337, −2.71198599609019791692672971446, −1.50702914756187173951441299994, 1.50702914756187173951441299994, 2.71198599609019791692672971446, 5.07613467189564004284936807337, 5.85205374965197959692099114443, 7.81056503788783160259611549228, 9.790113203735723743314501488028, 10.92854797118525319698082645922, 12.77250750804935101865730088165, 13.73691039800623536557749820115, 14.66255173747013879490324824232

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