Properties

Label 2-2e8-4.3-c6-0-6
Degree $2$
Conductor $256$
Sign $-i$
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  − 8.49i·3-s − 59.7·5-s − 483. i·7-s + 656.·9-s + 1.41e3i·11-s − 3.45e3·13-s + 507. i·15-s − 3.05e3·17-s − 968. i·19-s − 4.10e3·21-s − 3.31e3i·23-s − 1.20e4·25-s − 1.17e4i·27-s + 2.63e4·29-s − 2.71e4i·31-s + ⋯
L(s)  = 1  − 0.314i·3-s − 0.477·5-s − 1.40i·7-s + 0.901·9-s + 1.06i·11-s − 1.57·13-s + 0.150i·15-s − 0.622·17-s − 0.141i·19-s − 0.443·21-s − 0.272i·23-s − 0.771·25-s − 0.598i·27-s + 1.08·29-s − 0.909i·31-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(256\)    =    \(2^{8}\)
Sign: $-i$
Analytic conductor: \(58.8938\)
Root analytic conductor: \(7.67423\)
Motivic weight: \(6\)
Rational: no
Arithmetic: yes
Character: $\chi_{256} (255, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 256,\ (\ :3),\ -i)\)

Particular Values

\(L(\frac{7}{2})\) \(\approx\) \(0.6619678205\)
\(L(\frac12)\) \(\approx\) \(0.6619678205\)
\(L(4)\) 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 \( 1 + 8.49iT - 729T^{2} \)
5 \( 1 + 59.7T + 1.56e4T^{2} \)
7 \( 1 + 483. iT - 1.17e5T^{2} \)
11 \( 1 - 1.41e3iT - 1.77e6T^{2} \)
13 \( 1 + 3.45e3T + 4.82e6T^{2} \)
17 \( 1 + 3.05e3T + 2.41e7T^{2} \)
19 \( 1 + 968. iT - 4.70e7T^{2} \)
23 \( 1 + 3.31e3iT - 1.48e8T^{2} \)
29 \( 1 - 2.63e4T + 5.94e8T^{2} \)
31 \( 1 + 2.71e4iT - 8.87e8T^{2} \)
37 \( 1 - 3.60e4T + 2.56e9T^{2} \)
41 \( 1 - 6.86e3T + 4.75e9T^{2} \)
43 \( 1 - 9.28e4iT - 6.32e9T^{2} \)
47 \( 1 - 1.59e5iT - 1.07e10T^{2} \)
53 \( 1 + 8.66e4T + 2.21e10T^{2} \)
59 \( 1 - 1.28e5iT - 4.21e10T^{2} \)
61 \( 1 + 1.89e5T + 5.15e10T^{2} \)
67 \( 1 - 3.19e5iT - 9.04e10T^{2} \)
71 \( 1 - 1.96e5iT - 1.28e11T^{2} \)
73 \( 1 - 6.39e4T + 1.51e11T^{2} \)
79 \( 1 - 1.64e5iT - 2.43e11T^{2} \)
83 \( 1 - 8.02e5iT - 3.26e11T^{2} \)
89 \( 1 - 5.41e4T + 4.96e11T^{2} \)
97 \( 1 + 1.10e6T + 8.32e11T^{2} \)
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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

−11.19059112927253221308322452750, −10.08796027973584745503313874899, −9.620570043283287714624339095442, −7.81318090227848965734095189096, −7.39224353805116516728348854803, −6.56580306210683017506124312759, −4.58458813689210568216479422108, −4.25027081322391383865058686915, −2.45255899310010222121206104282, −1.07629607635726518056824546255, 0.18283820631947604492357941034, 2.02062137185212549035992421583, 3.20509868231752500009451107893, 4.56236932334046916450097739797, 5.50123379763009442142974429384, 6.72434613361066284725186936077, 7.88261120958260476744443659002, 8.850810430593528350366435186073, 9.688966706470480298200164696962, 10.70744305060492086752222844815

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