Properties

Label 2-21780-1.1-c1-0-8
Degree $2$
Conductor $21780$
Sign $1$
Analytic cond. $173.914$
Root an. cond. $13.1876$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 5-s + 2·7-s + 4·13-s − 7·17-s + 4·19-s + 9·23-s + 25-s + 4·29-s + 7·31-s − 2·35-s + 2·37-s − 2·41-s + 12·43-s − 9·47-s − 3·49-s + 13·53-s − 8·59-s + 5·61-s − 4·65-s + 14·67-s − 8·71-s − 8·73-s − 9·79-s + 8·83-s + 7·85-s + 6·89-s + 8·91-s + ⋯
L(s)  = 1  − 0.447·5-s + 0.755·7-s + 1.10·13-s − 1.69·17-s + 0.917·19-s + 1.87·23-s + 1/5·25-s + 0.742·29-s + 1.25·31-s − 0.338·35-s + 0.328·37-s − 0.312·41-s + 1.82·43-s − 1.31·47-s − 3/7·49-s + 1.78·53-s − 1.04·59-s + 0.640·61-s − 0.496·65-s + 1.71·67-s − 0.949·71-s − 0.936·73-s − 1.01·79-s + 0.878·83-s + 0.759·85-s + 0.635·89-s + 0.838·91-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 21780 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 21780 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(21780\)    =    \(2^{2} \cdot 3^{2} \cdot 5 \cdot 11^{2}\)
Sign: $1$
Analytic conductor: \(173.914\)
Root analytic conductor: \(13.1876\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 21780,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.725573246\)
\(L(\frac12)\) \(\approx\) \(2.725573246\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 \)
5 \( 1 + T \)
11 \( 1 \)
good7 \( 1 - 2 T + p T^{2} \)
13 \( 1 - 4 T + p T^{2} \)
17 \( 1 + 7 T + p T^{2} \)
19 \( 1 - 4 T + p T^{2} \)
23 \( 1 - 9 T + p T^{2} \)
29 \( 1 - 4 T + p T^{2} \)
31 \( 1 - 7 T + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 + 2 T + p T^{2} \)
43 \( 1 - 12 T + p T^{2} \)
47 \( 1 + 9 T + p T^{2} \)
53 \( 1 - 13 T + p T^{2} \)
59 \( 1 + 8 T + p T^{2} \)
61 \( 1 - 5 T + p T^{2} \)
67 \( 1 - 14 T + p T^{2} \)
71 \( 1 + 8 T + p T^{2} \)
73 \( 1 + 8 T + p T^{2} \)
79 \( 1 + 9 T + p T^{2} \)
83 \( 1 - 8 T + p T^{2} \)
89 \( 1 - 6 T + p T^{2} \)
97 \( 1 + 14 T + p T^{2} \)
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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

−15.59033819632994, −15.10691522521601, −14.48346823833269, −13.92307540989126, −13.25409844752078, −13.08592406657211, −12.17400695837489, −11.56142273656884, −11.18898961205504, −10.83289039824598, −10.11134860833798, −9.285996028150522, −8.737843545504779, −8.410924858386742, −7.703128454992757, −7.025521483049147, −6.549758992436275, −5.833400951220746, −4.956533648251435, −4.602311860819543, −3.898345278171605, −3.065708491862551, −2.437186783018721, −1.359399310405892, −0.7488895079513927, 0.7488895079513927, 1.359399310405892, 2.437186783018721, 3.065708491862551, 3.898345278171605, 4.602311860819543, 4.956533648251435, 5.833400951220746, 6.549758992436275, 7.025521483049147, 7.703128454992757, 8.410924858386742, 8.737843545504779, 9.285996028150522, 10.11134860833798, 10.83289039824598, 11.18898961205504, 11.56142273656884, 12.17400695837489, 13.08592406657211, 13.25409844752078, 13.92307540989126, 14.48346823833269, 15.10691522521601, 15.59033819632994

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