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Properties

Label 2-648-9.7-c3-0-20
Degree $2$
Conductor $648$
Sign $0.939 - 0.342i$
Analytic cond. $38.2332$
Root an. cond. $6.18330$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (6.67 + 11.5i)5-s + (7.17 − 12.4i)7-s + (19.5 − 33.8i)11-s + (38.3 + 66.5i)13-s + 62.4·17-s − 39.7·19-s + (−64.2 − 111. i)23-s + (−26.7 + 46.2i)25-s + (32.4 − 56.2i)29-s + (4.56 + 7.91i)31-s + 191.·35-s + 319.·37-s + (8.78 + 15.2i)41-s + (225. − 390. i)43-s + (−290. + 503. i)47-s + ⋯
L(s)  = 1  + (0.597 + 1.03i)5-s + (0.387 − 0.671i)7-s + (0.535 − 0.927i)11-s + (0.819 + 1.41i)13-s + 0.890·17-s − 0.480·19-s + (−0.582 − 1.00i)23-s + (−0.213 + 0.370i)25-s + (0.207 − 0.360i)29-s + (0.0264 + 0.0458i)31-s + 0.926·35-s + 1.41·37-s + (0.0334 + 0.0579i)41-s + (0.799 − 1.38i)43-s + (−0.902 + 1.56i)47-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 648 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.939 - 0.342i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 648 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (0.939 - 0.342i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(648\)    =    \(2^{3} \cdot 3^{4}\)
Sign: $0.939 - 0.342i$
Analytic conductor: \(38.2332\)
Root analytic conductor: \(6.18330\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{648} (217, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 648,\ (\ :3/2),\ 0.939 - 0.342i)\)

Particular Values

\(L(2)\) \(\approx\) \(2.631520868\)
\(L(\frac12)\) \(\approx\) \(2.631520868\)
\(L(\frac{5}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 \)
good5 \( 1 + (-6.67 - 11.5i)T + (-62.5 + 108. i)T^{2} \)
7 \( 1 + (-7.17 + 12.4i)T + (-171.5 - 297. i)T^{2} \)
11 \( 1 + (-19.5 + 33.8i)T + (-665.5 - 1.15e3i)T^{2} \)
13 \( 1 + (-38.3 - 66.5i)T + (-1.09e3 + 1.90e3i)T^{2} \)
17 \( 1 - 62.4T + 4.91e3T^{2} \)
19 \( 1 + 39.7T + 6.85e3T^{2} \)
23 \( 1 + (64.2 + 111. i)T + (-6.08e3 + 1.05e4i)T^{2} \)
29 \( 1 + (-32.4 + 56.2i)T + (-1.21e4 - 2.11e4i)T^{2} \)
31 \( 1 + (-4.56 - 7.91i)T + (-1.48e4 + 2.57e4i)T^{2} \)
37 \( 1 - 319.T + 5.06e4T^{2} \)
41 \( 1 + (-8.78 - 15.2i)T + (-3.44e4 + 5.96e4i)T^{2} \)
43 \( 1 + (-225. + 390. i)T + (-3.97e4 - 6.88e4i)T^{2} \)
47 \( 1 + (290. - 503. i)T + (-5.19e4 - 8.99e4i)T^{2} \)
53 \( 1 + 329.T + 1.48e5T^{2} \)
59 \( 1 + (120. + 209. i)T + (-1.02e5 + 1.77e5i)T^{2} \)
61 \( 1 + (248. - 430. i)T + (-1.13e5 - 1.96e5i)T^{2} \)
67 \( 1 + (-289. - 500. i)T + (-1.50e5 + 2.60e5i)T^{2} \)
71 \( 1 - 660.T + 3.57e5T^{2} \)
73 \( 1 - 696.T + 3.89e5T^{2} \)
79 \( 1 + (365. - 632. i)T + (-2.46e5 - 4.26e5i)T^{2} \)
83 \( 1 + (-545. + 944. i)T + (-2.85e5 - 4.95e5i)T^{2} \)
89 \( 1 - 317.T + 7.04e5T^{2} \)
97 \( 1 + (-742. + 1.28e3i)T + (-4.56e5 - 7.90e5i)T^{2} \)
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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

−10.33544563745904210346989645491, −9.412001803606853433080252711961, −8.478656445614642500464345962552, −7.49847432326514652915544826537, −6.35876032297143470079720294631, −6.14698471684070785360939733270, −4.47075793541465010321415249741, −3.59704686990743989085639066156, −2.33529627726776542476107029889, −1.05050541809741534273719374652, 0.993414654760538544600297941068, 1.96839526764580073171407756559, 3.45614152052246735214718721968, 4.77041989462041670949314571297, 5.51184055342439213003453943573, 6.26808375427947758207567277258, 7.75392953548938847633050847821, 8.342164770669378088865033090419, 9.340742034230592686913326295808, 9.863731900644336436020781672881

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