Properties

Label 2-648-1.1-c3-0-21
Degree $2$
Conductor $648$
Sign $-1$
Analytic cond. $38.2332$
Root an. cond. $6.18330$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 17.9·5-s + 7.28·7-s + 4.61·11-s + 29.8·13-s + 67.9·17-s + 111.·19-s − 218.·23-s + 198.·25-s + 34.2·29-s − 77.7·31-s − 130.·35-s − 347.·37-s + 234.·41-s + 53.3·43-s − 385.·47-s − 289.·49-s − 461.·53-s − 82.9·55-s + 7.16·59-s + 416.·61-s − 537.·65-s − 869.·67-s − 585.·71-s − 733.·73-s + 33.6·77-s + 1.17e3·79-s − 67.4·83-s + ⋯
L(s)  = 1  − 1.60·5-s + 0.393·7-s + 0.126·11-s + 0.637·13-s + 0.969·17-s + 1.34·19-s − 1.98·23-s + 1.58·25-s + 0.219·29-s − 0.450·31-s − 0.632·35-s − 1.54·37-s + 0.893·41-s + 0.189·43-s − 1.19·47-s − 0.845·49-s − 1.19·53-s − 0.203·55-s + 0.0158·59-s + 0.873·61-s − 1.02·65-s − 1.58·67-s − 0.979·71-s − 1.17·73-s + 0.0497·77-s + 1.66·79-s − 0.0891·83-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: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 648,\ (\ :3/2),\ -1)\)

Particular Values

\(L(2)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{5}{2})\) 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 \( 1 + 17.9T + 125T^{2} \)
7 \( 1 - 7.28T + 343T^{2} \)
11 \( 1 - 4.61T + 1.33e3T^{2} \)
13 \( 1 - 29.8T + 2.19e3T^{2} \)
17 \( 1 - 67.9T + 4.91e3T^{2} \)
19 \( 1 - 111.T + 6.85e3T^{2} \)
23 \( 1 + 218.T + 1.21e4T^{2} \)
29 \( 1 - 34.2T + 2.43e4T^{2} \)
31 \( 1 + 77.7T + 2.97e4T^{2} \)
37 \( 1 + 347.T + 5.06e4T^{2} \)
41 \( 1 - 234.T + 6.89e4T^{2} \)
43 \( 1 - 53.3T + 7.95e4T^{2} \)
47 \( 1 + 385.T + 1.03e5T^{2} \)
53 \( 1 + 461.T + 1.48e5T^{2} \)
59 \( 1 - 7.16T + 2.05e5T^{2} \)
61 \( 1 - 416.T + 2.26e5T^{2} \)
67 \( 1 + 869.T + 3.00e5T^{2} \)
71 \( 1 + 585.T + 3.57e5T^{2} \)
73 \( 1 + 733.T + 3.89e5T^{2} \)
79 \( 1 - 1.17e3T + 4.93e5T^{2} \)
83 \( 1 + 67.4T + 5.71e5T^{2} \)
89 \( 1 + 965.T + 7.04e5T^{2} \)
97 \( 1 - 1.43T + 9.12e5T^{2} \)
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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

−9.768722801882447711419783941866, −8.617455269185724848676454506360, −7.87254327895731654860067572181, −7.40167098089854465601883757655, −6.11012215582931254705310708340, −4.98644993586293269556998520146, −3.91766970247283554593030108831, −3.25267429593388203232271509935, −1.40339986641973325446299452637, 0, 1.40339986641973325446299452637, 3.25267429593388203232271509935, 3.91766970247283554593030108831, 4.98644993586293269556998520146, 6.11012215582931254705310708340, 7.40167098089854465601883757655, 7.87254327895731654860067572181, 8.617455269185724848676454506360, 9.768722801882447711419783941866

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