Properties

Label 2-640-128.93-c1-0-17
Degree $2$
Conductor $640$
Sign $0.114 - 0.993i$
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  + (1.40 + 0.151i)2-s + (−1.82 − 0.179i)3-s + (1.95 + 0.426i)4-s + (0.471 + 0.881i)5-s + (−2.53 − 0.528i)6-s + (0.716 + 3.60i)7-s + (2.68 + 0.896i)8-s + (0.340 + 0.0678i)9-s + (0.528 + 1.31i)10-s + (−2.48 − 2.03i)11-s + (−3.48 − 1.12i)12-s + (2.57 + 1.37i)13-s + (0.460 + 5.17i)14-s + (−0.700 − 1.69i)15-s + (3.63 + 1.66i)16-s + (−1.64 + 3.96i)17-s + ⋯
L(s)  = 1  + (0.994 + 0.107i)2-s + (−1.05 − 0.103i)3-s + (0.976 + 0.213i)4-s + (0.210 + 0.394i)5-s + (−1.03 − 0.215i)6-s + (0.270 + 1.36i)7-s + (0.948 + 0.317i)8-s + (0.113 + 0.0226i)9-s + (0.167 + 0.414i)10-s + (−0.749 − 0.614i)11-s + (−1.00 − 0.325i)12-s + (0.714 + 0.381i)13-s + (0.123 + 1.38i)14-s + (−0.180 − 0.436i)15-s + (0.908 + 0.417i)16-s + (−0.398 + 0.962i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.114 - 0.993i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.114 - 0.993i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(640\)    =    \(2^{7} \cdot 5\)
Sign: $0.114 - 0.993i$
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: \((2,\ 640,\ (\ :1/2),\ 0.114 - 0.993i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.41353 + 1.26002i\)
\(L(\frac12)\) \(\approx\) \(1.41353 + 1.26002i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-1.40 - 0.151i)T \)
5 \( 1 + (-0.471 - 0.881i)T \)
good3 \( 1 + (1.82 + 0.179i)T + (2.94 + 0.585i)T^{2} \)
7 \( 1 + (-0.716 - 3.60i)T + (-6.46 + 2.67i)T^{2} \)
11 \( 1 + (2.48 + 2.03i)T + (2.14 + 10.7i)T^{2} \)
13 \( 1 + (-2.57 - 1.37i)T + (7.22 + 10.8i)T^{2} \)
17 \( 1 + (1.64 - 3.96i)T + (-12.0 - 12.0i)T^{2} \)
19 \( 1 + (4.99 - 1.51i)T + (15.7 - 10.5i)T^{2} \)
23 \( 1 + (-0.267 + 0.178i)T + (8.80 - 21.2i)T^{2} \)
29 \( 1 + (-5.07 - 6.18i)T + (-5.65 + 28.4i)T^{2} \)
31 \( 1 + (-0.257 + 0.257i)T - 31iT^{2} \)
37 \( 1 + (-2.93 + 9.66i)T + (-30.7 - 20.5i)T^{2} \)
41 \( 1 + (-4.60 - 6.88i)T + (-15.6 + 37.8i)T^{2} \)
43 \( 1 + (6.84 - 0.674i)T + (42.1 - 8.38i)T^{2} \)
47 \( 1 + (-6.78 - 2.81i)T + (33.2 + 33.2i)T^{2} \)
53 \( 1 + (-1.97 + 2.40i)T + (-10.3 - 51.9i)T^{2} \)
59 \( 1 + (0.227 - 0.121i)T + (32.7 - 49.0i)T^{2} \)
61 \( 1 + (-1.03 + 10.5i)T + (-59.8 - 11.9i)T^{2} \)
67 \( 1 + (-1.07 + 10.9i)T + (-65.7 - 13.0i)T^{2} \)
71 \( 1 + (3.62 - 0.721i)T + (65.5 - 27.1i)T^{2} \)
73 \( 1 + (-1.47 + 7.41i)T + (-67.4 - 27.9i)T^{2} \)
79 \( 1 + (14.5 - 6.01i)T + (55.8 - 55.8i)T^{2} \)
83 \( 1 + (0.861 + 2.83i)T + (-69.0 + 46.1i)T^{2} \)
89 \( 1 + (-0.378 - 0.252i)T + (34.0 + 82.2i)T^{2} \)
97 \( 1 + (-9.07 + 9.07i)T - 97iT^{2} \)
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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

−10.98731545522357717080109898573, −10.50359276610441072604382584885, −8.827494521098955856611161290616, −8.119664902953396326407062346992, −6.65341560429385616357542176129, −6.03155861290732104027656327234, −5.57644262772601004947243416277, −4.52139947276757386904926011759, −3.10531666293260994048207305483, −1.97201309867085432974645490335, 0.854456231003206073747307914691, 2.58525368619290097057856772346, 4.21904104702632139765629822501, 4.73230737908043953039034291994, 5.66652222213287705545656458799, 6.57871690255292442850904364001, 7.37107202108886225881551179078, 8.463493484424936085478787316545, 10.20083082015479798808716798359, 10.43512175228856157757511818021

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