Properties

Label 2-20-20.19-c6-0-4
Degree $2$
Conductor $20$
Sign $1$
Analytic cond. $4.60108$
Root an. cond. $2.14501$
Motivic weight $6$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 8·2-s − 44·3-s + 64·4-s − 125·5-s + 352·6-s + 524·7-s − 512·8-s + 1.20e3·9-s + 1.00e3·10-s − 2.81e3·12-s − 4.19e3·14-s + 5.50e3·15-s + 4.09e3·16-s − 9.65e3·18-s − 8.00e3·20-s − 2.30e4·21-s + 1.53e4·23-s + 2.25e4·24-s + 1.56e4·25-s − 2.10e4·27-s + 3.35e4·28-s + 4.48e4·29-s − 4.40e4·30-s − 3.27e4·32-s − 6.55e4·35-s + 7.72e4·36-s + 6.40e4·40-s + ⋯
L(s)  = 1  − 2-s − 1.62·3-s + 4-s − 5-s + 1.62·6-s + 1.52·7-s − 8-s + 1.65·9-s + 10-s − 1.62·12-s − 1.52·14-s + 1.62·15-s + 16-s − 1.65·18-s − 20-s − 2.48·21-s + 1.26·23-s + 1.62·24-s + 25-s − 1.06·27-s + 1.52·28-s + 1.83·29-s − 1.62·30-s − 32-s − 1.52·35-s + 1.65·36-s + 40-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 20 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(7-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 20 ^{s/2} \, \Gamma_{\C}(s+3) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(20\)    =    \(2^{2} \cdot 5\)
Sign: $1$
Analytic conductor: \(4.60108\)
Root analytic conductor: \(2.14501\)
Motivic weight: \(6\)
Rational: yes
Arithmetic: yes
Character: $\chi_{20} (19, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 20,\ (\ :3),\ 1)\)

Particular Values

\(L(\frac{7}{2})\) \(\approx\) \(0.5341878580\)
\(L(\frac12)\) \(\approx\) \(0.5341878580\)
\(L(4)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + p^{3} T \)
5 \( 1 + p^{3} T \)
good3 \( 1 + 44 T + p^{6} T^{2} \)
7 \( 1 - 524 T + p^{6} T^{2} \)
11 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
13 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
17 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
19 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
23 \( 1 - 15356 T + p^{6} T^{2} \)
29 \( 1 - 44858 T + p^{6} T^{2} \)
31 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
37 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
41 \( 1 + 74338 T + p^{6} T^{2} \)
43 \( 1 + 17404 T + p^{6} T^{2} \)
47 \( 1 - 26444 T + p^{6} T^{2} \)
53 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
59 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
61 \( 1 - 452342 T + p^{6} T^{2} \)
67 \( 1 + 1276 T + p^{6} T^{2} \)
71 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
73 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
79 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
83 \( 1 - 1131716 T + p^{6} T^{2} \)
89 \( 1 - 511058 T + p^{6} T^{2} \)
97 \( ( 1 - p^{3} T )( 1 + p^{3} T ) \)
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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

−17.22295989848122149650783756062, −16.13742806024158998255784262244, −14.98765456448803144049581338089, −12.15101653989214036314938812078, −11.40292932966400066928821279626, −10.59448415266923782408622638073, −8.314417512756925902264958020299, −6.91103528665437821657493746827, −4.97686906242514601602353639083, −0.915759703166410749817117910843, 0.915759703166410749817117910843, 4.97686906242514601602353639083, 6.91103528665437821657493746827, 8.314417512756925902264958020299, 10.59448415266923782408622638073, 11.40292932966400066928821279626, 12.15101653989214036314938812078, 14.98765456448803144049581338089, 16.13742806024158998255784262244, 17.22295989848122149650783756062

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