Properties

Label 2-1280-8.5-c3-0-61
Degree $2$
Conductor $1280$
Sign $-0.707 + 0.707i$
Analytic cond. $75.5224$
Root an. cond. $8.69036$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 8i·3-s + 5i·5-s − 4·7-s − 37·9-s − 12i·11-s + 58i·13-s + 40·15-s + 66·17-s − 100i·19-s + 32i·21-s + 132·23-s − 25·25-s + 80i·27-s + 90i·29-s − 152·31-s + ⋯
L(s)  = 1  − 1.53i·3-s + 0.447i·5-s − 0.215·7-s − 1.37·9-s − 0.328i·11-s + 1.23i·13-s + 0.688·15-s + 0.941·17-s − 1.20i·19-s + 0.332i·21-s + 1.19·23-s − 0.200·25-s + 0.570i·27-s + 0.576i·29-s − 0.880·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.707 + 0.707i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (-0.707 + 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1280\)    =    \(2^{8} \cdot 5\)
Sign: $-0.707 + 0.707i$
Analytic conductor: \(75.5224\)
Root analytic conductor: \(8.69036\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{1280} (641, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1280,\ (\ :3/2),\ -0.707 + 0.707i)\)

Particular Values

\(L(2)\) \(\approx\) \(1.718057133\)
\(L(\frac12)\) \(\approx\) \(1.718057133\)
\(L(\frac{5}{2})\) 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 \( 1 - 5iT \)
good3 \( 1 + 8iT - 27T^{2} \)
7 \( 1 + 4T + 343T^{2} \)
11 \( 1 + 12iT - 1.33e3T^{2} \)
13 \( 1 - 58iT - 2.19e3T^{2} \)
17 \( 1 - 66T + 4.91e3T^{2} \)
19 \( 1 + 100iT - 6.85e3T^{2} \)
23 \( 1 - 132T + 1.21e4T^{2} \)
29 \( 1 - 90iT - 2.43e4T^{2} \)
31 \( 1 + 152T + 2.97e4T^{2} \)
37 \( 1 + 34iT - 5.06e4T^{2} \)
41 \( 1 - 438T + 6.89e4T^{2} \)
43 \( 1 + 32iT - 7.95e4T^{2} \)
47 \( 1 - 204T + 1.03e5T^{2} \)
53 \( 1 - 222iT - 1.48e5T^{2} \)
59 \( 1 + 420iT - 2.05e5T^{2} \)
61 \( 1 + 902iT - 2.26e5T^{2} \)
67 \( 1 + 1.02e3iT - 3.00e5T^{2} \)
71 \( 1 - 432T + 3.57e5T^{2} \)
73 \( 1 + 362T + 3.89e5T^{2} \)
79 \( 1 - 160T + 4.93e5T^{2} \)
83 \( 1 - 72iT - 5.71e5T^{2} \)
89 \( 1 + 810T + 7.04e5T^{2} \)
97 \( 1 - 1.10e3T + 9.12e5T^{2} \)
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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

−8.975287280805214976339080733048, −7.935646030344014569655680072488, −7.20253056205684990320231509499, −6.72193077318100427533334263103, −5.96319200181216474610487650586, −4.86506294395467970151436499211, −3.45617477976136811041237087102, −2.52163419297756270846207188530, −1.52827403572224603466696020579, −0.46513673086794340581250285551, 1.04214109859367355837513261597, 2.79035127196225421676899351848, 3.65300097773270333920247806650, 4.41180159246136435423391767744, 5.43672880766219590606009387896, 5.77795850273166173665972315547, 7.32413559426443359812558459997, 8.142916655522256424869248973162, 9.001991498319209293192737163879, 9.717141575532191684185157017954

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