Properties

Label 2-2e8-8.3-c6-0-32
Degree $2$
Conductor $256$
Sign $-0.707 + 0.707i$
Analytic cond. $58.8938$
Root an. cond. $7.67423$
Motivic weight $6$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 30.9·3-s + 10i·5-s − 309. i·7-s + 231.·9-s + 960.·11-s − 1.46e3i·13-s − 309. i·15-s − 4.76e3·17-s + 7.52e3·19-s + 9.60e3i·21-s + 1.04e4i·23-s + 1.55e4·25-s + 1.54e4·27-s − 2.54e4i·29-s + 4.18e4i·31-s + ⋯
L(s)  = 1  − 1.14·3-s + 0.0800i·5-s − 0.903i·7-s + 0.316·9-s + 0.721·11-s − 0.667i·13-s − 0.0918i·15-s − 0.970·17-s + 1.09·19-s + 1.03i·21-s + 0.860i·23-s + 0.993·25-s + 0.783·27-s − 1.04i·29-s + 1.40i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 256 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.707 + 0.707i)\, \overline{\Lambda}(7-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 256 ^{s/2} \, \Gamma_{\C}(s+3) \, L(s)\cr =\mathstrut & (-0.707 + 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(256\)    =    \(2^{8}\)
Sign: $-0.707 + 0.707i$
Analytic conductor: \(58.8938\)
Root analytic conductor: \(7.67423\)
Motivic weight: \(6\)
Rational: no
Arithmetic: yes
Character: $\chi_{256} (127, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 256,\ (\ :3),\ -0.707 + 0.707i)\)

Particular Values

\(L(\frac{7}{2})\) \(\approx\) \(0.7445705940\)
\(L(\frac12)\) \(\approx\) \(0.7445705940\)
\(L(4)\) 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 \( 1 + 30.9T + 729T^{2} \)
5 \( 1 - 10iT - 1.56e4T^{2} \)
7 \( 1 + 309. iT - 1.17e5T^{2} \)
11 \( 1 - 960.T + 1.77e6T^{2} \)
13 \( 1 + 1.46e3iT - 4.82e6T^{2} \)
17 \( 1 + 4.76e3T + 2.41e7T^{2} \)
19 \( 1 - 7.52e3T + 4.70e7T^{2} \)
23 \( 1 - 1.04e4iT - 1.48e8T^{2} \)
29 \( 1 + 2.54e4iT - 5.94e8T^{2} \)
31 \( 1 - 4.18e4iT - 8.87e8T^{2} \)
37 \( 1 - 1.99e3iT - 2.56e9T^{2} \)
41 \( 1 + 2.93e4T + 4.75e9T^{2} \)
43 \( 1 - 2.15e4T + 6.32e9T^{2} \)
47 \( 1 + 7.56e3iT - 1.07e10T^{2} \)
53 \( 1 + 1.92e5iT - 2.21e10T^{2} \)
59 \( 1 - 7.84e4T + 4.21e10T^{2} \)
61 \( 1 - 1.09e4iT - 5.15e10T^{2} \)
67 \( 1 + 3.94e5T + 9.04e10T^{2} \)
71 \( 1 + 5.32e5iT - 1.28e11T^{2} \)
73 \( 1 + 2.88e5T + 1.51e11T^{2} \)
79 \( 1 + 3.10e5iT - 2.43e11T^{2} \)
83 \( 1 + 2.04e5T + 3.26e11T^{2} \)
89 \( 1 + 3.10e5T + 4.96e11T^{2} \)
97 \( 1 + 1.45e6T + 8.32e11T^{2} \)
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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

−10.76090153892993725244463287151, −9.913179823500062775042349076595, −8.697077066482396156140678144558, −7.34967332654867074688619999081, −6.58087770545728340164780112310, −5.51348799327458549648076510403, −4.52006658536806485683922633665, −3.22324946656302809175974682900, −1.28017627768555605728699843145, −0.26946140116293416852650998299, 1.12419677699335392670972983746, 2.63253947167963744735225251800, 4.31915632814042672422214760349, 5.33231755980442617460130377508, 6.23343770058290382328234963823, 7.05418056219885820227570753765, 8.655062966244507337781105152938, 9.305089225808063075806269845518, 10.61673173311100463773573408304, 11.48831948859150869802304705292

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