Properties

Label 2-18-1.1-c5-0-0
Degree $2$
Conductor $18$
Sign $1$
Analytic cond. $2.88690$
Root an. cond. $1.69909$
Motivic weight $5$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 4·2-s + 16·4-s + 66·5-s + 176·7-s − 64·8-s − 264·10-s + 60·11-s − 658·13-s − 704·14-s + 256·16-s + 414·17-s + 956·19-s + 1.05e3·20-s − 240·22-s − 600·23-s + 1.23e3·25-s + 2.63e3·26-s + 2.81e3·28-s − 5.57e3·29-s − 3.59e3·31-s − 1.02e3·32-s − 1.65e3·34-s + 1.16e4·35-s − 8.45e3·37-s − 3.82e3·38-s − 4.22e3·40-s − 1.91e4·41-s + ⋯
L(s)  = 1  − 0.707·2-s + 1/2·4-s + 1.18·5-s + 1.35·7-s − 0.353·8-s − 0.834·10-s + 0.149·11-s − 1.07·13-s − 0.959·14-s + 1/4·16-s + 0.347·17-s + 0.607·19-s + 0.590·20-s − 0.105·22-s − 0.236·23-s + 0.393·25-s + 0.763·26-s + 0.678·28-s − 1.23·29-s − 0.671·31-s − 0.176·32-s − 0.245·34-s + 1.60·35-s − 1.01·37-s − 0.429·38-s − 0.417·40-s − 1.78·41-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(6-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s+5/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(18\)    =    \(2 \cdot 3^{2}\)
Sign: $1$
Analytic conductor: \(2.88690\)
Root analytic conductor: \(1.69909\)
Motivic weight: \(5\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 18,\ (\ :5/2),\ 1)\)

Particular Values

\(L(3)\) \(\approx\) \(1.253113366\)
\(L(\frac12)\) \(\approx\) \(1.253113366\)
\(L(\frac{7}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + p^{2} T \)
3 \( 1 \)
good5 \( 1 - 66 T + p^{5} T^{2} \)
7 \( 1 - 176 T + p^{5} T^{2} \)
11 \( 1 - 60 T + p^{5} T^{2} \)
13 \( 1 + 658 T + p^{5} T^{2} \)
17 \( 1 - 414 T + p^{5} T^{2} \)
19 \( 1 - 956 T + p^{5} T^{2} \)
23 \( 1 + 600 T + p^{5} T^{2} \)
29 \( 1 + 5574 T + p^{5} T^{2} \)
31 \( 1 + 3592 T + p^{5} T^{2} \)
37 \( 1 + 8458 T + p^{5} T^{2} \)
41 \( 1 + 19194 T + p^{5} T^{2} \)
43 \( 1 - 13316 T + p^{5} T^{2} \)
47 \( 1 - 19680 T + p^{5} T^{2} \)
53 \( 1 - 31266 T + p^{5} T^{2} \)
59 \( 1 + 26340 T + p^{5} T^{2} \)
61 \( 1 + 31090 T + p^{5} T^{2} \)
67 \( 1 + 16804 T + p^{5} T^{2} \)
71 \( 1 + 6120 T + p^{5} T^{2} \)
73 \( 1 + 25558 T + p^{5} T^{2} \)
79 \( 1 - 74408 T + p^{5} T^{2} \)
83 \( 1 - 6468 T + p^{5} T^{2} \)
89 \( 1 - 32742 T + p^{5} T^{2} \)
97 \( 1 - 166082 T + p^{5} T^{2} \)
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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

−17.60143514747107855641847853621, −16.87164772888336234276489010211, −14.96418520544948281580193268289, −13.86991612116280703195375597256, −11.96966521577168841456746050653, −10.46840057583256842149293444215, −9.176764611080178693852768714264, −7.50027778823224844564042209893, −5.41916015996980546828401580900, −1.85679263470097699384725873814, 1.85679263470097699384725873814, 5.41916015996980546828401580900, 7.50027778823224844564042209893, 9.176764611080178693852768714264, 10.46840057583256842149293444215, 11.96966521577168841456746050653, 13.86991612116280703195375597256, 14.96418520544948281580193268289, 16.87164772888336234276489010211, 17.60143514747107855641847853621

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