Properties

Label 2-18-9.7-c5-0-2
Degree $2$
Conductor $18$
Sign $0.138 + 0.990i$
Analytic cond. $2.88690$
Root an. cond. $1.69909$
Motivic weight $5$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (−2 + 3.46i)2-s + (−2.43 − 15.3i)3-s + (−7.99 − 13.8i)4-s + (−20.8 − 36.0i)5-s + (58.2 + 22.3i)6-s + (101. − 176. i)7-s + 63.9·8-s + (−231. + 74.9i)9-s + 166.·10-s + (−235. + 407. i)11-s + (−193. + 156. i)12-s + (−241. − 418. i)13-s + (406. + 704. i)14-s + (−504. + 407. i)15-s + (−128 + 221. i)16-s + 1.25e3·17-s + ⋯
L(s)  = 1  + (−0.353 + 0.612i)2-s + (−0.156 − 0.987i)3-s + (−0.249 − 0.433i)4-s + (−0.372 − 0.644i)5-s + (0.660 + 0.253i)6-s + (0.784 − 1.35i)7-s + 0.353·8-s + (−0.951 + 0.308i)9-s + 0.526·10-s + (−0.585 + 1.01i)11-s + (−0.388 + 0.314i)12-s + (−0.396 − 0.686i)13-s + (0.554 + 0.960i)14-s + (−0.578 + 0.468i)15-s + (−0.125 + 0.216i)16-s + 1.05·17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.138 + 0.990i)\, \overline{\Lambda}(6-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s+5/2) \, L(s)\cr =\mathstrut & (0.138 + 0.990i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(18\)    =    \(2 \cdot 3^{2}\)
Sign: $0.138 + 0.990i$
Analytic conductor: \(2.88690\)
Root analytic conductor: \(1.69909\)
Motivic weight: \(5\)
Rational: no
Arithmetic: yes
Character: $\chi_{18} (7, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 18,\ (\ :5/2),\ 0.138 + 0.990i)\)

Particular Values

\(L(3)\) \(\approx\) \(0.711464 - 0.618852i\)
\(L(\frac12)\) \(\approx\) \(0.711464 - 0.618852i\)
\(L(\frac{7}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (2 - 3.46i)T \)
3 \( 1 + (2.43 + 15.3i)T \)
good5 \( 1 + (20.8 + 36.0i)T + (-1.56e3 + 2.70e3i)T^{2} \)
7 \( 1 + (-101. + 176. i)T + (-8.40e3 - 1.45e4i)T^{2} \)
11 \( 1 + (235. - 407. i)T + (-8.05e4 - 1.39e5i)T^{2} \)
13 \( 1 + (241. + 418. i)T + (-1.85e5 + 3.21e5i)T^{2} \)
17 \( 1 - 1.25e3T + 1.41e6T^{2} \)
19 \( 1 - 1.97e3T + 2.47e6T^{2} \)
23 \( 1 + (239. + 414. i)T + (-3.21e6 + 5.57e6i)T^{2} \)
29 \( 1 + (-580. + 1.00e3i)T + (-1.02e7 - 1.77e7i)T^{2} \)
31 \( 1 + (-1.18e3 - 2.05e3i)T + (-1.43e7 + 2.47e7i)T^{2} \)
37 \( 1 - 8.18e3T + 6.93e7T^{2} \)
41 \( 1 + (8.75e3 + 1.51e4i)T + (-5.79e7 + 1.00e8i)T^{2} \)
43 \( 1 + (1.14e4 - 1.98e4i)T + (-7.35e7 - 1.27e8i)T^{2} \)
47 \( 1 + (-8.68e3 + 1.50e4i)T + (-1.14e8 - 1.98e8i)T^{2} \)
53 \( 1 + 5.39e3T + 4.18e8T^{2} \)
59 \( 1 + (-2.22e4 - 3.85e4i)T + (-3.57e8 + 6.19e8i)T^{2} \)
61 \( 1 + (2.08e3 - 3.60e3i)T + (-4.22e8 - 7.31e8i)T^{2} \)
67 \( 1 + (1.22e3 + 2.12e3i)T + (-6.75e8 + 1.16e9i)T^{2} \)
71 \( 1 - 2.18e3T + 1.80e9T^{2} \)
73 \( 1 - 3.03e3T + 2.07e9T^{2} \)
79 \( 1 + (-2.52e4 + 4.37e4i)T + (-1.53e9 - 2.66e9i)T^{2} \)
83 \( 1 + (-2.59e4 + 4.48e4i)T + (-1.96e9 - 3.41e9i)T^{2} \)
89 \( 1 + 2.01e4T + 5.58e9T^{2} \)
97 \( 1 + (4.02e4 - 6.96e4i)T + (-4.29e9 - 7.43e9i)T^{2} \)
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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

−17.42049655817944042852234461490, −16.40424592337537953139432736475, −14.65174390824673245448867612688, −13.42934193235437147742669244323, −12.05497591550853884360819620928, −10.25892326133427922183191293679, −8.016668984762849669723093966124, −7.33103831796893653089430074620, −5.04791351640243052345209877504, −0.916430588039136972737422307563, 3.06793779425881685658265795884, 5.34074953897671859287786828179, 8.209909422166116065329542666778, 9.616811875477401714869018676737, 11.16920258402269954026601765740, 11.87180437707102884142481858592, 14.22993117073027092372100101866, 15.38581037304592269836720214771, 16.62160747948628093428452776286, 18.23774701279597346327758414378

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