Properties

Label 2-1280-40.19-c2-0-49
Degree $2$
Conductor $1280$
Sign $0.707 + 0.707i$
Analytic cond. $34.8774$
Root an. cond. $5.90571$
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  − 4.47i·3-s + 5i·5-s + 13.4·7-s − 11.0·9-s + 22.3·15-s − 60.0i·21-s + 13.4·23-s − 25·25-s + 8.94i·27-s + 22i·29-s + 67.0i·35-s + 62·41-s + 40.2i·43-s − 55.0i·45-s + 93.9·47-s + ⋯
L(s)  = 1  − 1.49i·3-s + i·5-s + 1.91·7-s − 1.22·9-s + 1.49·15-s − 2.85i·21-s + 0.583·23-s − 25-s + 0.331i·27-s + 0.758i·29-s + 1.91i·35-s + 1.51·41-s + 0.936i·43-s − 1.22i·45-s + 1.99·47-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.707 + 0.707i)\, \overline{\Lambda}(3-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s+1) \, L(s)\cr =\mathstrut & (0.707 + 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1280\)    =    \(2^{8} \cdot 5\)
Sign: $0.707 + 0.707i$
Analytic conductor: \(34.8774\)
Root analytic conductor: \(5.90571\)
Motivic weight: \(2\)
Rational: no
Arithmetic: yes
Character: $\chi_{1280} (639, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1280,\ (\ :1),\ 0.707 + 0.707i)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(2.564063229\)
\(L(\frac12)\) \(\approx\) \(2.564063229\)
\(L(2)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
5 \( 1 - 5iT \)
good3 \( 1 + 4.47iT - 9T^{2} \)
7 \( 1 - 13.4T + 49T^{2} \)
11 \( 1 + 121T^{2} \)
13 \( 1 + 169T^{2} \)
17 \( 1 - 289T^{2} \)
19 \( 1 + 361T^{2} \)
23 \( 1 - 13.4T + 529T^{2} \)
29 \( 1 - 22iT - 841T^{2} \)
31 \( 1 - 961T^{2} \)
37 \( 1 + 1.36e3T^{2} \)
41 \( 1 - 62T + 1.68e3T^{2} \)
43 \( 1 - 40.2iT - 1.84e3T^{2} \)
47 \( 1 - 93.9T + 2.20e3T^{2} \)
53 \( 1 + 2.80e3T^{2} \)
59 \( 1 + 3.48e3T^{2} \)
61 \( 1 + 58iT - 3.72e3T^{2} \)
67 \( 1 - 67.0iT - 4.48e3T^{2} \)
71 \( 1 - 5.04e3T^{2} \)
73 \( 1 - 5.32e3T^{2} \)
79 \( 1 - 6.24e3T^{2} \)
83 \( 1 + 147. iT - 6.88e3T^{2} \)
89 \( 1 - 142T + 7.92e3T^{2} \)
97 \( 1 - 9.40e3T^{2} \)
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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

−9.137331142733776164337563449837, −8.231706643785272328646762454495, −7.59026137976584722414139290692, −7.17267196034562518195384566413, −6.21441538251241973290134243868, −5.35089378344739684649375227426, −4.22809411274490126313145621120, −2.75406427973830161945788341699, −1.93722412508759310270914217975, −1.01991485144524085662118700402, 1.00054258564060164681877071369, 2.31182674310274815769606450899, 3.95722945850504871039277967285, 4.44050091372220930313406763190, 5.16774888551262673665676737989, 5.71871526262673651444951719747, 7.43671265336181436044783384379, 8.193654329903563627108170682000, 8.906156288670725302775547260727, 9.417597999092150494735456995645

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