Properties

Label 2-768-4.3-c4-0-54
Degree $2$
Conductor $768$
Sign $i$
Analytic cond. $79.3881$
Root an. cond. $8.91000$
Motivic weight $4$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 5.19i·3-s + 39.7·5-s − 46.0i·7-s − 27·9-s − 181. i·11-s + 183.·13-s − 206. i·15-s + 427.·17-s + 668. i·19-s − 239.·21-s − 882. i·23-s + 954.·25-s + 140. i·27-s + 807.·29-s − 391. i·31-s + ⋯
L(s)  = 1  − 0.577i·3-s + 1.58·5-s − 0.939i·7-s − 0.333·9-s − 1.49i·11-s + 1.08·13-s − 0.917i·15-s + 1.48·17-s + 1.85i·19-s − 0.542·21-s − 1.66i·23-s + 1.52·25-s + 0.192i·27-s + 0.959·29-s − 0.407i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & i\, \overline{\Lambda}(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & i\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(768\)    =    \(2^{8} \cdot 3\)
Sign: $i$
Analytic conductor: \(79.3881\)
Root analytic conductor: \(8.91000\)
Motivic weight: \(4\)
Rational: no
Arithmetic: yes
Character: $\chi_{768} (511, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 768,\ (\ :2),\ i)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(3.447029781\)
\(L(\frac12)\) \(\approx\) \(3.447029781\)
\(L(3)\) 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 \( 1 + 5.19iT \)
good5 \( 1 - 39.7T + 625T^{2} \)
7 \( 1 + 46.0iT - 2.40e3T^{2} \)
11 \( 1 + 181. iT - 1.46e4T^{2} \)
13 \( 1 - 183.T + 2.85e4T^{2} \)
17 \( 1 - 427.T + 8.35e4T^{2} \)
19 \( 1 - 668. iT - 1.30e5T^{2} \)
23 \( 1 + 882. iT - 2.79e5T^{2} \)
29 \( 1 - 807.T + 7.07e5T^{2} \)
31 \( 1 + 391. iT - 9.23e5T^{2} \)
37 \( 1 - 466.T + 1.87e6T^{2} \)
41 \( 1 + 2.15e3T + 2.82e6T^{2} \)
43 \( 1 - 509. iT - 3.41e6T^{2} \)
47 \( 1 - 2.05e3iT - 4.87e6T^{2} \)
53 \( 1 + 753.T + 7.89e6T^{2} \)
59 \( 1 + 1.30e3iT - 1.21e7T^{2} \)
61 \( 1 - 801.T + 1.38e7T^{2} \)
67 \( 1 + 505. iT - 2.01e7T^{2} \)
71 \( 1 - 2.17e3iT - 2.54e7T^{2} \)
73 \( 1 - 2.29e3T + 2.83e7T^{2} \)
79 \( 1 - 1.07e4iT - 3.89e7T^{2} \)
83 \( 1 - 2.97e3iT - 4.74e7T^{2} \)
89 \( 1 - 6.49e3T + 6.27e7T^{2} \)
97 \( 1 + 8.18e3T + 8.85e7T^{2} \)
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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

−9.701177992853790148407488577224, −8.459268641425128909254708176541, −8.034468085168251611575578943074, −6.59171925546249510149510804511, −6.08599603695016329654162837849, −5.43141940786624349150666698809, −3.83606191625682840830235668712, −2.84696832523874925084751924563, −1.44052210565510214617389327207, −0.871446325413227789793506068191, 1.34171299225696009296017255578, 2.29717314345385644810356009996, 3.32271186262600257901622646808, 4.87945393588888997533330920432, 5.41606783869797412696674435431, 6.25425749295202438799405901440, 7.23729417108824825444295307302, 8.599103610628997642565927978447, 9.304833063160792265982932436839, 9.831538684150230803601101877733

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