Properties

Label 2-2e8-1.1-c7-0-50
Degree $2$
Conductor $256$
Sign $-1$
Analytic cond. $79.9705$
Root an. cond. $8.94262$
Motivic weight $7$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 21.9·3-s + 184.·5-s + 1.05e3·7-s − 1.70e3·9-s + 4.32e3·11-s − 1.12e4·13-s + 4.05e3·15-s − 2.17e4·17-s − 4.54e4·19-s + 2.30e4·21-s + 4.41e3·23-s − 4.39e4·25-s − 8.54e4·27-s + 2.36e4·29-s − 7.29e4·31-s + 9.48e4·33-s + 1.94e5·35-s − 4.83e5·37-s − 2.46e5·39-s + 4.11e5·41-s − 9.61e4·43-s − 3.15e5·45-s + 1.56e5·47-s + 2.83e5·49-s − 4.77e5·51-s + 6.86e5·53-s + 7.99e5·55-s + ⋯
L(s)  = 1  + 0.469·3-s + 0.661·5-s + 1.15·7-s − 0.779·9-s + 0.979·11-s − 1.42·13-s + 0.310·15-s − 1.07·17-s − 1.52·19-s + 0.543·21-s + 0.0756·23-s − 0.562·25-s − 0.835·27-s + 0.180·29-s − 0.439·31-s + 0.459·33-s + 0.766·35-s − 1.56·37-s − 0.666·39-s + 0.931·41-s − 0.184·43-s − 0.515·45-s + 0.219·47-s + 0.343·49-s − 0.503·51-s + 0.633·53-s + 0.648·55-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 256 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(8-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 256 ^{s/2} \, \Gamma_{\C}(s+7/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(256\)    =    \(2^{8}\)
Sign: $-1$
Analytic conductor: \(79.9705\)
Root analytic conductor: \(8.94262\)
Motivic weight: \(7\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 256,\ (\ :7/2),\ -1)\)

Particular Values

\(L(4)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{9}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
good3 \( 1 - 21.9T + 2.18e3T^{2} \)
5 \( 1 - 184.T + 7.81e4T^{2} \)
7 \( 1 - 1.05e3T + 8.23e5T^{2} \)
11 \( 1 - 4.32e3T + 1.94e7T^{2} \)
13 \( 1 + 1.12e4T + 6.27e7T^{2} \)
17 \( 1 + 2.17e4T + 4.10e8T^{2} \)
19 \( 1 + 4.54e4T + 8.93e8T^{2} \)
23 \( 1 - 4.41e3T + 3.40e9T^{2} \)
29 \( 1 - 2.36e4T + 1.72e10T^{2} \)
31 \( 1 + 7.29e4T + 2.75e10T^{2} \)
37 \( 1 + 4.83e5T + 9.49e10T^{2} \)
41 \( 1 - 4.11e5T + 1.94e11T^{2} \)
43 \( 1 + 9.61e4T + 2.71e11T^{2} \)
47 \( 1 - 1.56e5T + 5.06e11T^{2} \)
53 \( 1 - 6.86e5T + 1.17e12T^{2} \)
59 \( 1 - 1.79e6T + 2.48e12T^{2} \)
61 \( 1 + 1.36e6T + 3.14e12T^{2} \)
67 \( 1 - 1.08e6T + 6.06e12T^{2} \)
71 \( 1 + 5.60e6T + 9.09e12T^{2} \)
73 \( 1 + 2.16e4T + 1.10e13T^{2} \)
79 \( 1 + 2.34e6T + 1.92e13T^{2} \)
83 \( 1 - 8.82e5T + 2.71e13T^{2} \)
89 \( 1 - 1.34e6T + 4.42e13T^{2} \)
97 \( 1 - 7.32e6T + 8.07e13T^{2} \)
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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

−10.27924237727460953751428506259, −9.098804968395960242787061202343, −8.569355793720304683909318133255, −7.39992476849732772984978545100, −6.26759518233967098930002757195, −5.10780824228407406852775906248, −4.09260062729536611931909951576, −2.43223111500508726904436361730, −1.78552759647879903164172717419, 0, 1.78552759647879903164172717419, 2.43223111500508726904436361730, 4.09260062729536611931909951576, 5.10780824228407406852775906248, 6.26759518233967098930002757195, 7.39992476849732772984978545100, 8.569355793720304683909318133255, 9.098804968395960242787061202343, 10.27924237727460953751428506259

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