Properties

Label 2-1280-8.5-c1-0-26
Degree $2$
Conductor $1280$
Sign $-0.707 + 0.707i$
Analytic cond. $10.2208$
Root an. cond. $3.19700$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2i·3-s i·5-s − 2·7-s − 9-s − 2i·13-s + 2·15-s − 6·17-s + 4i·19-s − 4i·21-s − 6·23-s − 25-s + 4i·27-s − 6i·29-s − 4·31-s + 2i·35-s + ⋯
L(s)  = 1  + 1.15i·3-s − 0.447i·5-s − 0.755·7-s − 0.333·9-s − 0.554i·13-s + 0.516·15-s − 1.45·17-s + 0.917i·19-s − 0.872i·21-s − 1.25·23-s − 0.200·25-s + 0.769i·27-s − 1.11i·29-s − 0.718·31-s + 0.338i·35-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.707 + 0.707i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.707 + 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1280\)    =    \(2^{8} \cdot 5\)
Sign: $-0.707 + 0.707i$
Analytic conductor: \(10.2208\)
Root analytic conductor: \(3.19700\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1280} (641, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(1\)
Selberg data: \((2,\ 1280,\ (\ :1/2),\ -0.707 + 0.707i)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) 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 \( 1 + iT \)
good3 \( 1 - 2iT - 3T^{2} \)
7 \( 1 + 2T + 7T^{2} \)
11 \( 1 - 11T^{2} \)
13 \( 1 + 2iT - 13T^{2} \)
17 \( 1 + 6T + 17T^{2} \)
19 \( 1 - 4iT - 19T^{2} \)
23 \( 1 + 6T + 23T^{2} \)
29 \( 1 + 6iT - 29T^{2} \)
31 \( 1 + 4T + 31T^{2} \)
37 \( 1 - 2iT - 37T^{2} \)
41 \( 1 + 6T + 41T^{2} \)
43 \( 1 + 10iT - 43T^{2} \)
47 \( 1 + 6T + 47T^{2} \)
53 \( 1 + 6iT - 53T^{2} \)
59 \( 1 - 12iT - 59T^{2} \)
61 \( 1 + 2iT - 61T^{2} \)
67 \( 1 + 2iT - 67T^{2} \)
71 \( 1 - 12T + 71T^{2} \)
73 \( 1 + 2T + 73T^{2} \)
79 \( 1 - 8T + 79T^{2} \)
83 \( 1 + 6iT - 83T^{2} \)
89 \( 1 - 6T + 89T^{2} \)
97 \( 1 - 2T + 97T^{2} \)
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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

−9.539561210487403574675283344717, −8.720780437434469962417611550224, −7.947734946671294662176519651630, −6.76688402776421694590616068181, −5.89685145504248507853114839610, −5.00990142224555417387955616255, −4.08751456399959515893395846470, −3.48532229815160737435781499688, −2.05326687888168253012791912667, 0, 1.71445765527751321897892714700, 2.61865819129094450462582354274, 3.79555062207260394056854598536, 4.92788450814285464970946220317, 6.38643347295196248226107769990, 6.55439813991020394176486152580, 7.33782374831349734915177782979, 8.230129938830794240392666925692, 9.157322000026837505816158343106

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