Properties

Label 2-2e8-1.1-c1-0-3
Degree $2$
Conductor $256$
Sign $1$
Analytic cond. $2.04417$
Root an. cond. $1.42974$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2.82·3-s + 5.00·9-s − 2.82·11-s + 6·17-s − 8.48·19-s − 5·25-s + 5.65·27-s − 8.00·33-s + 6·41-s + 8.48·43-s − 7·49-s + 16.9·51-s − 24·57-s − 14.1·59-s − 8.48·67-s + 2·73-s − 14.1·75-s + 1.00·81-s + 2.82·83-s + 18·89-s − 10·97-s − 14.1·99-s + 19.7·107-s + 18·113-s + ⋯
L(s)  = 1  + 1.63·3-s + 1.66·9-s − 0.852·11-s + 1.45·17-s − 1.94·19-s − 25-s + 1.08·27-s − 1.39·33-s + 0.937·41-s + 1.29·43-s − 49-s + 2.37·51-s − 3.17·57-s − 1.84·59-s − 1.03·67-s + 0.234·73-s − 1.63·75-s + 0.111·81-s + 0.310·83-s + 1.90·89-s − 1.01·97-s − 1.42·99-s + 1.91·107-s + 1.69·113-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(256\)    =    \(2^{8}\)
Sign: $1$
Analytic conductor: \(2.04417\)
Root analytic conductor: \(1.42974\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 256,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.956921643\)
\(L(\frac12)\) \(\approx\) \(1.956921643\)
\(L(\frac{3}{2})\) 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 \( 1 - 2.82T + 3T^{2} \)
5 \( 1 + 5T^{2} \)
7 \( 1 + 7T^{2} \)
11 \( 1 + 2.82T + 11T^{2} \)
13 \( 1 + 13T^{2} \)
17 \( 1 - 6T + 17T^{2} \)
19 \( 1 + 8.48T + 19T^{2} \)
23 \( 1 + 23T^{2} \)
29 \( 1 + 29T^{2} \)
31 \( 1 + 31T^{2} \)
37 \( 1 + 37T^{2} \)
41 \( 1 - 6T + 41T^{2} \)
43 \( 1 - 8.48T + 43T^{2} \)
47 \( 1 + 47T^{2} \)
53 \( 1 + 53T^{2} \)
59 \( 1 + 14.1T + 59T^{2} \)
61 \( 1 + 61T^{2} \)
67 \( 1 + 8.48T + 67T^{2} \)
71 \( 1 + 71T^{2} \)
73 \( 1 - 2T + 73T^{2} \)
79 \( 1 + 79T^{2} \)
83 \( 1 - 2.82T + 83T^{2} \)
89 \( 1 - 18T + 89T^{2} \)
97 \( 1 + 10T + 97T^{2} \)
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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

−12.35797581564216331802133964919, −10.80930439699301989240452536246, −9.938036229146395142845664532292, −9.033934658635621728990784548147, −8.066335838706079171976710141123, −7.55299395754220445658708645745, −6.00140065324702785753059105988, −4.39774330912317846963186570778, −3.22834670546030511963807300880, −2.09259386172801032688627778191, 2.09259386172801032688627778191, 3.22834670546030511963807300880, 4.39774330912317846963186570778, 6.00140065324702785753059105988, 7.55299395754220445658708645745, 8.066335838706079171976710141123, 9.033934658635621728990784548147, 9.938036229146395142845664532292, 10.80930439699301989240452536246, 12.35797581564216331802133964919

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