Properties

Label 2-1280-5.4-c1-0-41
Degree $2$
Conductor $1280$
Sign $-1$
Analytic cond. $10.2208$
Root an. cond. $3.19700$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 3.16i·3-s + 2.23·5-s − 4.24i·7-s − 7.00·9-s − 7.07i·15-s − 13.4·21-s − 1.41i·23-s + 5.00·25-s + 12.6i·27-s − 8.94·29-s − 9.48i·35-s + 12·41-s + 3.16i·43-s − 15.6·45-s − 9.89i·47-s + ⋯
L(s)  = 1  − 1.82i·3-s + 0.999·5-s − 1.60i·7-s − 2.33·9-s − 1.82i·15-s − 2.92·21-s − 0.294i·23-s + 1.00·25-s + 2.43i·27-s − 1.66·29-s − 1.60i·35-s + 1.87·41-s + 0.482i·43-s − 2.33·45-s − 1.44i·47-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1280\)    =    \(2^{8} \cdot 5\)
Sign: $-1$
Analytic conductor: \(10.2208\)
Root analytic conductor: \(3.19700\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1280} (769, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1280,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.662165901\)
\(L(\frac12)\) \(\approx\) \(1.662165901\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
5 \( 1 - 2.23T \)
good3 \( 1 + 3.16iT - 3T^{2} \)
7 \( 1 + 4.24iT - 7T^{2} \)
11 \( 1 + 11T^{2} \)
13 \( 1 - 13T^{2} \)
17 \( 1 - 17T^{2} \)
19 \( 1 + 19T^{2} \)
23 \( 1 + 1.41iT - 23T^{2} \)
29 \( 1 + 8.94T + 29T^{2} \)
31 \( 1 + 31T^{2} \)
37 \( 1 - 37T^{2} \)
41 \( 1 - 12T + 41T^{2} \)
43 \( 1 - 3.16iT - 43T^{2} \)
47 \( 1 + 9.89iT - 47T^{2} \)
53 \( 1 - 53T^{2} \)
59 \( 1 + 59T^{2} \)
61 \( 1 - 13.4T + 61T^{2} \)
67 \( 1 - 15.8iT - 67T^{2} \)
71 \( 1 + 71T^{2} \)
73 \( 1 - 73T^{2} \)
79 \( 1 + 79T^{2} \)
83 \( 1 + 9.48iT - 83T^{2} \)
89 \( 1 - 6T + 89T^{2} \)
97 \( 1 - 97T^{2} \)
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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

−9.173011658134479185233357235828, −8.211579459080945494931493065755, −7.37180054615200398591522069490, −6.96529908559581923470473206272, −6.15379024255503077825596239705, −5.35570244715184207686346759183, −3.92763752514989788616977354505, −2.60175771206566757867170950348, −1.62362903636296284698723335247, −0.68658930390005499480121379532, 2.18544267703346915664342748151, 3.01490255900182227104995763061, 4.11638414089062825535332761058, 5.24452195390248714795373551901, 5.55366799139059837885331082955, 6.33202653307794440330219547185, 7.962920476369171613868324707218, 9.026621347890859949703816920751, 9.258677909627388581685072499676, 9.816230869561932725957320111121

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