Properties

Label 2-3e4-3.2-c2-0-1
Degree $2$
Conductor $81$
Sign $-i$
Analytic cond. $2.20709$
Root an. cond. $1.48562$
Motivic weight $2$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 1.73i·2-s + 1.00·4-s + 3.46i·5-s + 2·7-s + 8.66i·8-s − 5.99·10-s + 1.73i·11-s − 4·13-s + 3.46i·14-s − 10.9·16-s − 15.5i·17-s + 11·19-s + 3.46i·20-s − 2.99·22-s − 27.7i·23-s + ⋯
L(s)  = 1  + 0.866i·2-s + 0.250·4-s + 0.692i·5-s + 0.285·7-s + 1.08i·8-s − 0.599·10-s + 0.157i·11-s − 0.307·13-s + 0.247i·14-s − 0.687·16-s − 0.916i·17-s + 0.578·19-s + 0.173i·20-s − 0.136·22-s − 1.20i·23-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 81 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -i\, \overline{\Lambda}(3-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 81 ^{s/2} \, \Gamma_{\C}(s+1) \, L(s)\cr =\mathstrut & -i\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(81\)    =    \(3^{4}\)
Sign: $-i$
Analytic conductor: \(2.20709\)
Root analytic conductor: \(1.48562\)
Motivic weight: \(2\)
Rational: no
Arithmetic: yes
Character: $\chi_{81} (80, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 81,\ (\ :1),\ -i)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(1.01152 + 1.01152i\)
\(L(\frac12)\) \(\approx\) \(1.01152 + 1.01152i\)
\(L(2)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 \)
good2 \( 1 - 1.73iT - 4T^{2} \)
5 \( 1 - 3.46iT - 25T^{2} \)
7 \( 1 - 2T + 49T^{2} \)
11 \( 1 - 1.73iT - 121T^{2} \)
13 \( 1 + 4T + 169T^{2} \)
17 \( 1 + 15.5iT - 289T^{2} \)
19 \( 1 - 11T + 361T^{2} \)
23 \( 1 + 27.7iT - 529T^{2} \)
29 \( 1 + 45.0iT - 841T^{2} \)
31 \( 1 - 32T + 961T^{2} \)
37 \( 1 + 34T + 1.36e3T^{2} \)
41 \( 1 + 12.1iT - 1.68e3T^{2} \)
43 \( 1 + 61T + 1.84e3T^{2} \)
47 \( 1 - 48.4iT - 2.20e3T^{2} \)
53 \( 1 - 2.80e3T^{2} \)
59 \( 1 - 50.2iT - 3.48e3T^{2} \)
61 \( 1 - 56T + 3.72e3T^{2} \)
67 \( 1 + 31T + 4.48e3T^{2} \)
71 \( 1 - 31.1iT - 5.04e3T^{2} \)
73 \( 1 - 65T + 5.32e3T^{2} \)
79 \( 1 - 38T + 6.24e3T^{2} \)
83 \( 1 - 48.4iT - 6.88e3T^{2} \)
89 \( 1 + 124. iT - 7.92e3T^{2} \)
97 \( 1 + 115T + 9.40e3T^{2} \)
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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

−14.55966552129171568996663950980, −13.74604169606526625164836059246, −12.06995674983017770374194116785, −11.16580948122811582814913551340, −9.968739564659839038337420143615, −8.377248914493064909821380960478, −7.28003725026865185845865828635, −6.37807969982557596340368666874, −4.91767619016850799903901619266, −2.65536699747951785015437441508, 1.50473706047180571496209978742, 3.42511858789640607936777590708, 5.12602344708600068734670111311, 6.82388651889356636195690988481, 8.301424638954119487778952888415, 9.600538665297463033232587871654, 10.67495667156671470596313301077, 11.72877688759363686535417870674, 12.54067656517139737040194692719, 13.51448435198373463008825810544

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