Properties

Label 2-640-128.93-c1-0-28
Degree $2$
Conductor $640$
Sign $-0.688 + 0.725i$
Analytic cond. $5.11042$
Root an. cond. $2.26062$
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  + (−1.12 − 0.854i)2-s + (−2.15 − 0.212i)3-s + (0.540 + 1.92i)4-s + (−0.471 − 0.881i)5-s + (2.24 + 2.07i)6-s + (−0.288 − 1.44i)7-s + (1.03 − 2.63i)8-s + (1.65 + 0.328i)9-s + (−0.221 + 1.39i)10-s + (3.98 + 3.27i)11-s + (−0.756 − 4.26i)12-s + (−1.20 − 0.646i)13-s + (−0.912 + 1.87i)14-s + (0.828 + 1.99i)15-s + (−3.41 + 2.08i)16-s + (−1.15 + 2.79i)17-s + ⋯
L(s)  = 1  + (−0.797 − 0.603i)2-s + (−1.24 − 0.122i)3-s + (0.270 + 0.962i)4-s + (−0.210 − 0.394i)5-s + (0.916 + 0.848i)6-s + (−0.108 − 0.547i)7-s + (0.365 − 0.930i)8-s + (0.550 + 0.109i)9-s + (−0.0701 + 0.441i)10-s + (1.20 + 0.986i)11-s + (−0.218 − 1.23i)12-s + (−0.335 − 0.179i)13-s + (−0.243 + 0.502i)14-s + (0.213 + 0.516i)15-s + (−0.853 + 0.520i)16-s + (−0.281 + 0.678i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.688 + 0.725i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.688 + 0.725i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(640\)    =    \(2^{7} \cdot 5\)
Sign: $-0.688 + 0.725i$
Analytic conductor: \(5.11042\)
Root analytic conductor: \(2.26062\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{640} (221, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 640,\ (\ :1/2),\ -0.688 + 0.725i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.181830 - 0.423352i\)
\(L(\frac12)\) \(\approx\) \(0.181830 - 0.423352i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (1.12 + 0.854i)T \)
5 \( 1 + (0.471 + 0.881i)T \)
good3 \( 1 + (2.15 + 0.212i)T + (2.94 + 0.585i)T^{2} \)
7 \( 1 + (0.288 + 1.44i)T + (-6.46 + 2.67i)T^{2} \)
11 \( 1 + (-3.98 - 3.27i)T + (2.14 + 10.7i)T^{2} \)
13 \( 1 + (1.20 + 0.646i)T + (7.22 + 10.8i)T^{2} \)
17 \( 1 + (1.15 - 2.79i)T + (-12.0 - 12.0i)T^{2} \)
19 \( 1 + (-7.24 + 2.19i)T + (15.7 - 10.5i)T^{2} \)
23 \( 1 + (-1.64 + 1.09i)T + (8.80 - 21.2i)T^{2} \)
29 \( 1 + (5.91 + 7.20i)T + (-5.65 + 28.4i)T^{2} \)
31 \( 1 + (4.70 - 4.70i)T - 31iT^{2} \)
37 \( 1 + (-3.28 + 10.8i)T + (-30.7 - 20.5i)T^{2} \)
41 \( 1 + (6.08 + 9.11i)T + (-15.6 + 37.8i)T^{2} \)
43 \( 1 + (-0.174 + 0.0171i)T + (42.1 - 8.38i)T^{2} \)
47 \( 1 + (8.95 + 3.71i)T + (33.2 + 33.2i)T^{2} \)
53 \( 1 + (5.24 - 6.39i)T + (-10.3 - 51.9i)T^{2} \)
59 \( 1 + (-7.40 + 3.95i)T + (32.7 - 49.0i)T^{2} \)
61 \( 1 + (0.103 - 1.04i)T + (-59.8 - 11.9i)T^{2} \)
67 \( 1 + (-0.270 + 2.74i)T + (-65.7 - 13.0i)T^{2} \)
71 \( 1 + (5.60 - 1.11i)T + (65.5 - 27.1i)T^{2} \)
73 \( 1 + (1.50 - 7.55i)T + (-67.4 - 27.9i)T^{2} \)
79 \( 1 + (-2.81 + 1.16i)T + (55.8 - 55.8i)T^{2} \)
83 \( 1 + (4.75 + 15.6i)T + (-69.0 + 46.1i)T^{2} \)
89 \( 1 + (10.8 + 7.24i)T + (34.0 + 82.2i)T^{2} \)
97 \( 1 + (-10.1 + 10.1i)T - 97iT^{2} \)
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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

−10.30030498632346966317955561308, −9.541793110232235276921984189797, −8.764451368090759570145493784993, −7.33850523495449241695116984065, −7.04593252582326949441064573977, −5.75571183266589099114723904188, −4.56682612792375265863773380308, −3.60471181990199605185861543506, −1.73380411340543148040567092335, −0.44954490745376720150539643938, 1.22017484790844156879893549390, 3.20690432957198147676062115888, 4.93331658836806529586965035953, 5.67672860243707417820474182667, 6.44690426756993843870090331482, 7.16373096671150497095547832174, 8.275076377467336873976566002800, 9.318856381768392393059731657438, 9.843104634515465691445669145232, 11.14427184444146006606573593772

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