Properties

Label 2-768-4.3-c4-0-38
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 − 23.7·5-s − 9.38i·7-s − 27·9-s + 112. i·11-s + 56.5·13-s + 123. i·15-s − 79.9·17-s − 211. i·19-s − 48.7·21-s + 217. i·23-s − 60.9·25-s + 140. i·27-s + 616.·29-s + 1.11e3i·31-s + ⋯
L(s)  = 1  − 0.577i·3-s − 0.949·5-s − 0.191i·7-s − 0.333·9-s + 0.925i·11-s + 0.334·13-s + 0.548i·15-s − 0.276·17-s − 0.585i·19-s − 0.110·21-s + 0.410i·23-s − 0.0975·25-s + 0.192i·27-s + 0.733·29-s + 1.15i·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

\(L(\frac{5}{2})\) \(\approx\) \(1.164778197\)
\(L(\frac12)\) \(\approx\) \(1.164778197\)
\(L(3)\) 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 \( 1 + 23.7T + 625T^{2} \)
7 \( 1 + 9.38iT - 2.40e3T^{2} \)
11 \( 1 - 112. iT - 1.46e4T^{2} \)
13 \( 1 - 56.5T + 2.85e4T^{2} \)
17 \( 1 + 79.9T + 8.35e4T^{2} \)
19 \( 1 + 211. iT - 1.30e5T^{2} \)
23 \( 1 - 217. iT - 2.79e5T^{2} \)
29 \( 1 - 616.T + 7.07e5T^{2} \)
31 \( 1 - 1.11e3iT - 9.23e5T^{2} \)
37 \( 1 + 802.T + 1.87e6T^{2} \)
41 \( 1 - 2.41e3T + 2.82e6T^{2} \)
43 \( 1 + 2.13e3iT - 3.41e6T^{2} \)
47 \( 1 - 3.59e3iT - 4.87e6T^{2} \)
53 \( 1 - 833.T + 7.89e6T^{2} \)
59 \( 1 + 1.30e3iT - 1.21e7T^{2} \)
61 \( 1 + 4.78e3T + 1.38e7T^{2} \)
67 \( 1 + 4.02e3iT - 2.01e7T^{2} \)
71 \( 1 + 9.48e3iT - 2.54e7T^{2} \)
73 \( 1 - 266.T + 2.83e7T^{2} \)
79 \( 1 - 5.75e3iT - 3.89e7T^{2} \)
83 \( 1 + 7.28e3iT - 4.74e7T^{2} \)
89 \( 1 - 1.41e3T + 6.27e7T^{2} \)
97 \( 1 + 3.11e3T + 8.85e7T^{2} \)
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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

−9.398008940827234403630167392764, −8.580038302570676420503218984955, −7.62466482077843759839955294838, −7.14557873973935352004009149264, −6.17278846313285103581711043190, −4.90757140812339736197171641745, −4.04406195369995341381682360959, −2.91364359985864332371248168753, −1.62931822960314352190964424557, −0.37236780708431007065446656595, 0.807899840943055689374903361463, 2.56146021108641373418885146370, 3.67680750873840046711878126382, 4.30059573518722625821302792683, 5.51979990959826472319262826217, 6.33467772669143964382928789587, 7.56282976026679032980354310670, 8.337046453597408411003888483127, 8.966249655666219795589435064595, 10.03140458265505713633628037089

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