Properties

Label 2-1280-40.27-c1-0-5
Degree $2$
Conductor $1280$
Sign $-0.767 - 0.640i$
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  + (−1 + i)3-s + (−2 − i)5-s + (−1 + i)7-s + i·9-s + 6·11-s + (−1 − i)13-s + (3 − i)15-s + (1 + i)17-s − 4i·19-s − 2i·21-s + (5 + 5i)23-s + (3 + 4i)25-s + (−4 − 4i)27-s − 8·29-s − 2i·31-s + ⋯
L(s)  = 1  + (−0.577 + 0.577i)3-s + (−0.894 − 0.447i)5-s + (−0.377 + 0.377i)7-s + 0.333i·9-s + 1.80·11-s + (−0.277 − 0.277i)13-s + (0.774 − 0.258i)15-s + (0.242 + 0.242i)17-s − 0.917i·19-s − 0.436i·21-s + (1.04 + 1.04i)23-s + (0.600 + 0.800i)25-s + (−0.769 − 0.769i)27-s − 1.48·29-s − 0.359i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.767 - 0.640i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1280 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.767 - 0.640i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1280\)    =    \(2^{8} \cdot 5\)
Sign: $-0.767 - 0.640i$
Analytic conductor: \(10.2208\)
Root analytic conductor: \(3.19700\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1280} (127, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1280,\ (\ :1/2),\ -0.767 - 0.640i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.6653750659\)
\(L(\frac12)\) \(\approx\) \(0.6653750659\)
\(L(\frac{3}{2})\) 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 \( 1 + (2 + i)T \)
good3 \( 1 + (1 - i)T - 3iT^{2} \)
7 \( 1 + (1 - i)T - 7iT^{2} \)
11 \( 1 - 6T + 11T^{2} \)
13 \( 1 + (1 + i)T + 13iT^{2} \)
17 \( 1 + (-1 - i)T + 17iT^{2} \)
19 \( 1 + 4iT - 19T^{2} \)
23 \( 1 + (-5 - 5i)T + 23iT^{2} \)
29 \( 1 + 8T + 29T^{2} \)
31 \( 1 + 2iT - 31T^{2} \)
37 \( 1 + (5 - 5i)T - 37iT^{2} \)
41 \( 1 + 6T + 41T^{2} \)
43 \( 1 + (3 - 3i)T - 43iT^{2} \)
47 \( 1 + (7 - 7i)T - 47iT^{2} \)
53 \( 1 + (-1 - i)T + 53iT^{2} \)
59 \( 1 - 4iT - 59T^{2} \)
61 \( 1 - 2iT - 61T^{2} \)
67 \( 1 + (-7 - 7i)T + 67iT^{2} \)
71 \( 1 + 6iT - 71T^{2} \)
73 \( 1 + (9 - 9i)T - 73iT^{2} \)
79 \( 1 - 8T + 79T^{2} \)
83 \( 1 + (5 - 5i)T - 83iT^{2} \)
89 \( 1 - 89T^{2} \)
97 \( 1 + (3 + 3i)T + 97iT^{2} \)
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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

−9.807735354794905581530592079613, −9.272072445653562646300314072668, −8.511109683962489576416988926912, −7.48038961464668760562434443057, −6.71416129302840148502117855105, −5.64444594093886384651758204454, −4.87166318245351595972247983051, −4.03753841264483963138599175312, −3.17707480947023233591466577047, −1.38527365421148303085833712471, 0.33044886942901098316539443010, 1.65171404125528601385392377384, 3.48688916936832019797727492340, 3.84986427928083685601883105354, 5.16737897252026642918622899044, 6.44056160427996727909260292567, 6.77957501910312377553814405254, 7.40452724078270674606199346892, 8.568888306870634378109142751078, 9.303216815984415969681090537131

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