Properties

Label 2-18-9.4-c5-0-2
Degree $2$
Conductor $18$
Sign $0.483 - 0.875i$
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 + (14.6 + 5.19i)3-s + (−7.99 + 13.8i)4-s + (1.19 − 2.07i)5-s + (11.3 + 61.3i)6-s + (25.8 + 44.7i)7-s − 63.9·8-s + (189 + 152. i)9-s + 9.57·10-s + (−335. − 581. i)11-s + (−189. + 162. i)12-s + (423. − 733. i)13-s + (−103. + 179. i)14-s + (28.3 − 24.2i)15-s + (−128 − 221. i)16-s − 1.13e3·17-s + ⋯
L(s)  = 1  + (0.353 + 0.612i)2-s + (0.942 + 0.333i)3-s + (−0.249 + 0.433i)4-s + (0.0214 − 0.0370i)5-s + (0.129 + 0.695i)6-s + (0.199 + 0.345i)7-s − 0.353·8-s + (0.777 + 0.628i)9-s + 0.0302·10-s + (−0.835 − 1.44i)11-s + (−0.380 + 0.324i)12-s + (0.694 − 1.20i)13-s + (−0.140 + 0.244i)14-s + (0.0325 − 0.0278i)15-s + (−0.125 − 0.216i)16-s − 0.952·17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.483 - 0.875i)\, \overline{\Lambda}(6-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 18 ^{s/2} \, \Gamma_{\C}(s+5/2) \, L(s)\cr =\mathstrut & (0.483 - 0.875i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(18\)    =    \(2 \cdot 3^{2}\)
Sign: $0.483 - 0.875i$
Analytic conductor: \(2.88690\)
Root analytic conductor: \(1.69909\)
Motivic weight: \(5\)
Rational: no
Arithmetic: yes
Character: $\chi_{18} (13, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 18,\ (\ :5/2),\ 0.483 - 0.875i)\)

Particular Values

\(L(3)\) \(\approx\) \(1.70987 + 1.00834i\)
\(L(\frac12)\) \(\approx\) \(1.70987 + 1.00834i\)
\(L(\frac{7}{2})\) 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 \( 1 + (-14.6 - 5.19i)T \)
good5 \( 1 + (-1.19 + 2.07i)T + (-1.56e3 - 2.70e3i)T^{2} \)
7 \( 1 + (-25.8 - 44.7i)T + (-8.40e3 + 1.45e4i)T^{2} \)
11 \( 1 + (335. + 581. i)T + (-8.05e4 + 1.39e5i)T^{2} \)
13 \( 1 + (-423. + 733. i)T + (-1.85e5 - 3.21e5i)T^{2} \)
17 \( 1 + 1.13e3T + 1.41e6T^{2} \)
19 \( 1 - 1.00e3T + 2.47e6T^{2} \)
23 \( 1 + (1.20e3 - 2.07e3i)T + (-3.21e6 - 5.57e6i)T^{2} \)
29 \( 1 + (1.88e3 + 3.26e3i)T + (-1.02e7 + 1.77e7i)T^{2} \)
31 \( 1 + (2.01e3 - 3.49e3i)T + (-1.43e7 - 2.47e7i)T^{2} \)
37 \( 1 + 1.45e4T + 6.93e7T^{2} \)
41 \( 1 + (-3.94e3 + 6.82e3i)T + (-5.79e7 - 1.00e8i)T^{2} \)
43 \( 1 + (-1.01e4 - 1.76e4i)T + (-7.35e7 + 1.27e8i)T^{2} \)
47 \( 1 + (-8.06e3 - 1.39e4i)T + (-1.14e8 + 1.98e8i)T^{2} \)
53 \( 1 + 5.54e3T + 4.18e8T^{2} \)
59 \( 1 + (-3.20e3 + 5.55e3i)T + (-3.57e8 - 6.19e8i)T^{2} \)
61 \( 1 + (4.44e3 + 7.69e3i)T + (-4.22e8 + 7.31e8i)T^{2} \)
67 \( 1 + (-2.14e4 + 3.71e4i)T + (-6.75e8 - 1.16e9i)T^{2} \)
71 \( 1 + 6.33e4T + 1.80e9T^{2} \)
73 \( 1 + 1.28e4T + 2.07e9T^{2} \)
79 \( 1 + (-1.46e3 - 2.53e3i)T + (-1.53e9 + 2.66e9i)T^{2} \)
83 \( 1 + (-2.37e4 - 4.11e4i)T + (-1.96e9 + 3.41e9i)T^{2} \)
89 \( 1 - 8.47e4T + 5.58e9T^{2} \)
97 \( 1 + (5.58e4 + 9.67e4i)T + (-4.29e9 + 7.43e9i)T^{2} \)
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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

−17.86105684230720304584628448099, −16.01295061274648738798662263329, −15.42430084666835328961304996437, −13.91870354183291055219471895792, −13.07345333670908913539755920854, −10.86555498261630164020485736686, −8.915779079601797956667019923252, −7.82096121188874813614081769066, −5.50062149911938647193123872670, −3.27599549842234091842542519150, 2.08851336967836819239291254926, 4.28784310012076385842983112758, 7.08629286298606661071889121808, 8.931740363194924856166255454556, 10.42152559117605619823078976369, 12.23125130720910284910479610614, 13.44021279852509992181761484535, 14.46939684041557378488797018692, 15.78273594128648547359147261726, 17.91195569327184199555978887773

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