Properties

Label 2-2e8-8.3-c8-0-24
Degree $2$
Conductor $256$
Sign $-0.707 - 0.707i$
Analytic cond. $104.288$
Root an. cond. $10.2121$
Motivic weight $8$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 135.·3-s + 581. i·5-s + 2.67e3i·7-s + 1.19e4·9-s + 1.41e4·11-s + 4.28e4i·13-s + 7.90e4i·15-s − 1.40e5·17-s − 1.29e5·19-s + 3.62e5i·21-s + 1.96e5i·23-s + 5.22e4·25-s + 7.27e5·27-s − 3.55e5i·29-s + 3.35e3i·31-s + ⋯
L(s)  = 1  + 1.67·3-s + 0.930i·5-s + 1.11i·7-s + 1.81·9-s + 0.966·11-s + 1.49i·13-s + 1.56i·15-s − 1.68·17-s − 0.995·19-s + 1.86i·21-s + 0.703i·23-s + 0.133·25-s + 1.36·27-s − 0.503i·29-s + 0.00363i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 256 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.707 - 0.707i)\, \overline{\Lambda}(9-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 256 ^{s/2} \, \Gamma_{\C}(s+4) \, L(s)\cr =\mathstrut & (-0.707 - 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(256\)    =    \(2^{8}\)
Sign: $-0.707 - 0.707i$
Analytic conductor: \(104.288\)
Root analytic conductor: \(10.2121\)
Motivic weight: \(8\)
Rational: no
Arithmetic: yes
Character: $\chi_{256} (127, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 256,\ (\ :4),\ -0.707 - 0.707i)\)

Particular Values

\(L(\frac{9}{2})\) \(\approx\) \(3.626473177\)
\(L(\frac12)\) \(\approx\) \(3.626473177\)
\(L(5)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
good3 \( 1 - 135.T + 6.56e3T^{2} \)
5 \( 1 - 581. iT - 3.90e5T^{2} \)
7 \( 1 - 2.67e3iT - 5.76e6T^{2} \)
11 \( 1 - 1.41e4T + 2.14e8T^{2} \)
13 \( 1 - 4.28e4iT - 8.15e8T^{2} \)
17 \( 1 + 1.40e5T + 6.97e9T^{2} \)
19 \( 1 + 1.29e5T + 1.69e10T^{2} \)
23 \( 1 - 1.96e5iT - 7.83e10T^{2} \)
29 \( 1 + 3.55e5iT - 5.00e11T^{2} \)
31 \( 1 - 3.35e3iT - 8.52e11T^{2} \)
37 \( 1 + 9.07e5iT - 3.51e12T^{2} \)
41 \( 1 - 3.06e6T + 7.98e12T^{2} \)
43 \( 1 + 5.01e6T + 1.16e13T^{2} \)
47 \( 1 + 3.25e6iT - 2.38e13T^{2} \)
53 \( 1 + 2.34e5iT - 6.22e13T^{2} \)
59 \( 1 + 7.78e6T + 1.46e14T^{2} \)
61 \( 1 + 2.42e7iT - 1.91e14T^{2} \)
67 \( 1 - 6.87e6T + 4.06e14T^{2} \)
71 \( 1 - 5.76e6iT - 6.45e14T^{2} \)
73 \( 1 - 1.19e7T + 8.06e14T^{2} \)
79 \( 1 - 3.55e7iT - 1.51e15T^{2} \)
83 \( 1 - 2.03e7T + 2.25e15T^{2} \)
89 \( 1 - 1.19e7T + 3.93e15T^{2} \)
97 \( 1 + 3.19e7T + 7.83e15T^{2} \)
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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

−10.96216923558218515664339517435, −9.499062189842931621593931019468, −9.063192755833561062806203217355, −8.322981362794337154140564143820, −6.97003758477321810831310855690, −6.40331276876496387764974249082, −4.42788076286553235401792752984, −3.53090349473259072774034364990, −2.30113276891567705639189903108, −1.95261851293614295795973677925, 0.54805441984793063227691174220, 1.59201979098791445211898500333, 2.84092474403497556980037671009, 3.98753153430122294268816230408, 4.63900800620921156775106095369, 6.51901732166014102930311494038, 7.55181701644956071103990773617, 8.546318294854243963749997685772, 8.907480754306974132310878640684, 10.04636945259129298142750222508

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