Properties

Label 2-640-8.5-c1-0-15
Degree $2$
Conductor $640$
Sign $-0.707 - 0.707i$
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

Related objects

Downloads

Learn more

Normalization:  

Dirichlet series

L(s)  = 1  − 3.16i·3-s i·5-s − 3.16·7-s − 7.00·9-s + 6i·13-s − 3.16·15-s − 2·17-s − 6.32i·19-s + 10.0i·21-s − 3.16·23-s − 25-s + 12.6i·27-s − 4i·29-s + 6.32·31-s + 3.16i·35-s + ⋯
L(s)  = 1  − 1.82i·3-s − 0.447i·5-s − 1.19·7-s − 2.33·9-s + 1.66i·13-s − 0.816·15-s − 0.485·17-s − 1.45i·19-s + 2.18i·21-s − 0.659·23-s − 0.200·25-s + 2.43i·27-s − 0.742i·29-s + 1.13·31-s + 0.534i·35-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.707 - 0.707i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 640 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.707 - 0.707i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(640\)    =    \(2^{7} \cdot 5\)
Sign: $-0.707 - 0.707i$
Analytic conductor: \(5.11042\)
Root analytic conductor: \(2.26062\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{640} (321, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 640,\ (\ :1/2),\ -0.707 - 0.707i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.202929 + 0.489914i\)
\(L(\frac12)\) \(\approx\) \(0.202929 + 0.489914i\)
\(L(\frac{3}{2})\) 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 \( 1 + 3.16iT - 3T^{2} \)
7 \( 1 + 3.16T + 7T^{2} \)
11 \( 1 - 11T^{2} \)
13 \( 1 - 6iT - 13T^{2} \)
17 \( 1 + 2T + 17T^{2} \)
19 \( 1 + 6.32iT - 19T^{2} \)
23 \( 1 + 3.16T + 23T^{2} \)
29 \( 1 + 4iT - 29T^{2} \)
31 \( 1 - 6.32T + 31T^{2} \)
37 \( 1 + 2iT - 37T^{2} \)
41 \( 1 + 41T^{2} \)
43 \( 1 + 3.16iT - 43T^{2} \)
47 \( 1 + 9.48T + 47T^{2} \)
53 \( 1 + 6iT - 53T^{2} \)
59 \( 1 + 6.32iT - 59T^{2} \)
61 \( 1 - 2iT - 61T^{2} \)
67 \( 1 - 9.48iT - 67T^{2} \)
71 \( 1 + 6.32T + 71T^{2} \)
73 \( 1 + 14T + 73T^{2} \)
79 \( 1 + 12.6T + 79T^{2} \)
83 \( 1 - 3.16iT - 83T^{2} \)
89 \( 1 - 10T + 89T^{2} \)
97 \( 1 - 2T + 97T^{2} \)
show more
show less
   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{2} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−9.807222643101876526902686763024, −8.984229153397378731215293817223, −8.260630490128092633433661250321, −7.03353269592353325942050026950, −6.69879903256589179764702686434, −5.89225463637949310957524935193, −4.41430719257763291213588108744, −2.84564328585706499638685310914, −1.81989427655183614989084688067, −0.27107672741641752521768572811, 2.96983604261534454155681560247, 3.44225408498995219433153080624, 4.53591910547356647311050971679, 5.68184582183030835364732325074, 6.28956415627370247835719815512, 7.83812829061745076779676971560, 8.720833877977333694789698027247, 9.764201852638662362074672491655, 10.18149037070771880621205414230, 10.65405309601378513942384223498

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