Properties

Label 2-648-1.1-c3-0-12
Degree $2$
Conductor $648$
Sign $1$
Analytic cond. $38.2332$
Root an. cond. $6.18330$
Motivic weight $3$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 5·5-s + 36·7-s + 64·11-s − 65·13-s + 59·17-s − 28·19-s + 160·23-s − 100·25-s − 57·29-s + 164·31-s − 180·35-s − 321·37-s − 246·41-s − 8·43-s + 84·47-s + 953·49-s + 478·53-s − 320·55-s − 32·59-s + 415·61-s + 325·65-s − 220·67-s + 884·71-s − 77·73-s + 2.30e3·77-s − 80·79-s + 1.26e3·83-s + ⋯
L(s)  = 1  − 0.447·5-s + 1.94·7-s + 1.75·11-s − 1.38·13-s + 0.841·17-s − 0.338·19-s + 1.45·23-s − 4/5·25-s − 0.364·29-s + 0.950·31-s − 0.869·35-s − 1.42·37-s − 0.937·41-s − 0.0283·43-s + 0.260·47-s + 2.77·49-s + 1.23·53-s − 0.784·55-s − 0.0706·59-s + 0.871·61-s + 0.620·65-s − 0.401·67-s + 1.47·71-s − 0.123·73-s + 3.40·77-s − 0.113·79-s + 1.67·83-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 648 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 648 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(648\)    =    \(2^{3} \cdot 3^{4}\)
Sign: $1$
Analytic conductor: \(38.2332\)
Root analytic conductor: \(6.18330\)
Motivic weight: \(3\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 648,\ (\ :3/2),\ 1)\)

Particular Values

\(L(2)\) \(\approx\) \(2.561936487\)
\(L(\frac12)\) \(\approx\) \(2.561936487\)
\(L(\frac{5}{2})\) 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 \( 1 \)
good5 \( 1 + p T + p^{3} T^{2} \)
7 \( 1 - 36 T + p^{3} T^{2} \)
11 \( 1 - 64 T + p^{3} T^{2} \)
13 \( 1 + 5 p T + p^{3} T^{2} \)
17 \( 1 - 59 T + p^{3} T^{2} \)
19 \( 1 + 28 T + p^{3} T^{2} \)
23 \( 1 - 160 T + p^{3} T^{2} \)
29 \( 1 + 57 T + p^{3} T^{2} \)
31 \( 1 - 164 T + p^{3} T^{2} \)
37 \( 1 + 321 T + p^{3} T^{2} \)
41 \( 1 + 6 p T + p^{3} T^{2} \)
43 \( 1 + 8 T + p^{3} T^{2} \)
47 \( 1 - 84 T + p^{3} T^{2} \)
53 \( 1 - 478 T + p^{3} T^{2} \)
59 \( 1 + 32 T + p^{3} T^{2} \)
61 \( 1 - 415 T + p^{3} T^{2} \)
67 \( 1 + 220 T + p^{3} T^{2} \)
71 \( 1 - 884 T + p^{3} T^{2} \)
73 \( 1 + 77 T + p^{3} T^{2} \)
79 \( 1 + 80 T + p^{3} T^{2} \)
83 \( 1 - 1268 T + p^{3} T^{2} \)
89 \( 1 - 123 T + p^{3} T^{2} \)
97 \( 1 - 1346 T + p^{3} T^{2} \)
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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

−10.21581134578005652593582290507, −9.156940287562783712994546429085, −8.386346567034038865660533441092, −7.54269803631698291244652272390, −6.82004439364284340113836912358, −5.34972537917882433732828392346, −4.65669181996994359650324409657, −3.69005499729225104266642198133, −2.06246584481550770345195590560, −1.01934273720162479571911548895, 1.01934273720162479571911548895, 2.06246584481550770345195590560, 3.69005499729225104266642198133, 4.65669181996994359650324409657, 5.34972537917882433732828392346, 6.82004439364284340113836912358, 7.54269803631698291244652272390, 8.386346567034038865660533441092, 9.156940287562783712994546429085, 10.21581134578005652593582290507

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