Properties

Label 2-2646-21.20-c1-0-39
Degree $2$
Conductor $2646$
Sign $0.156 + 0.987i$
Analytic cond. $21.1284$
Root an. cond. $4.59656$
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  + i·2-s − 4-s − 0.966·5-s i·8-s − 0.966i·10-s − 2.87i·11-s + 2.13i·13-s + 16-s + 2.44·17-s + 0.528i·19-s + 0.966·20-s + 2.87·22-s + 1.61i·23-s − 4.06·25-s − 2.13·26-s + ⋯
L(s)  = 1  + 0.707i·2-s − 0.5·4-s − 0.432·5-s − 0.353i·8-s − 0.305i·10-s − 0.866i·11-s + 0.591i·13-s + 0.250·16-s + 0.594·17-s + 0.121i·19-s + 0.216·20-s + 0.612·22-s + 0.336i·23-s − 0.813·25-s − 0.418·26-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 2646 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.156 + 0.987i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 2646 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.156 + 0.987i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(2646\)    =    \(2 \cdot 3^{3} \cdot 7^{2}\)
Sign: $0.156 + 0.987i$
Analytic conductor: \(21.1284\)
Root analytic conductor: \(4.59656\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{2646} (2645, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 2646,\ (\ :1/2),\ 0.156 + 0.987i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.6181963131\)
\(L(\frac12)\) \(\approx\) \(0.6181963131\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - iT \)
3 \( 1 \)
7 \( 1 \)
good5 \( 1 + 0.966T + 5T^{2} \)
11 \( 1 + 2.87iT - 11T^{2} \)
13 \( 1 - 2.13iT - 13T^{2} \)
17 \( 1 - 2.44T + 17T^{2} \)
19 \( 1 - 0.528iT - 19T^{2} \)
23 \( 1 - 1.61iT - 23T^{2} \)
29 \( 1 + 2.43iT - 29T^{2} \)
31 \( 1 - 0.279iT - 31T^{2} \)
37 \( 1 + 10.9T + 37T^{2} \)
41 \( 1 - 8.32T + 41T^{2} \)
43 \( 1 + 3.69T + 43T^{2} \)
47 \( 1 + 12.0T + 47T^{2} \)
53 \( 1 + 6.27iT - 53T^{2} \)
59 \( 1 - 11.4T + 59T^{2} \)
61 \( 1 + 10.1iT - 61T^{2} \)
67 \( 1 + 9.72T + 67T^{2} \)
71 \( 1 + 14.2iT - 71T^{2} \)
73 \( 1 + 1.31iT - 73T^{2} \)
79 \( 1 + 5.27T + 79T^{2} \)
83 \( 1 - 8.58T + 83T^{2} \)
89 \( 1 + 3.59T + 89T^{2} \)
97 \( 1 + 4.27iT - 97T^{2} \)
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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

−8.450966426333670737582750692982, −7.992005562191243890657803892143, −7.17863577857734975311681205171, −6.41129423015119783461406986707, −5.66947040076510608588267479594, −4.88401902702947733263399569075, −3.87789408702359193576633548238, −3.23782963894280981733760688926, −1.71995657120216965878234440025, −0.21429021688213296418030590924, 1.26219790072297759960609769155, 2.38083560093554622356761926358, 3.35077923922089524257195768806, 4.13342867037622152009896051108, 4.99760605107857833320257869702, 5.75549514555319918993449485367, 6.89557519914851145370121810764, 7.60451304306979137014718309798, 8.336222301876603632427998048019, 9.085338975622148989320931910825

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