Properties

Label 2-7728-1.1-c1-0-81
Degree $2$
Conductor $7728$
Sign $-1$
Analytic cond. $61.7083$
Root an. cond. $7.85546$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 3-s − 4·5-s − 7-s + 9-s − 2·11-s + 2·13-s − 4·15-s + 2·17-s + 2·19-s − 21-s − 23-s + 11·25-s + 27-s − 6·29-s − 2·33-s + 4·35-s + 4·37-s + 2·39-s − 10·41-s + 10·43-s − 4·45-s + 8·47-s + 49-s + 2·51-s + 8·55-s + 2·57-s − 4·61-s + ⋯
L(s)  = 1  + 0.577·3-s − 1.78·5-s − 0.377·7-s + 1/3·9-s − 0.603·11-s + 0.554·13-s − 1.03·15-s + 0.485·17-s + 0.458·19-s − 0.218·21-s − 0.208·23-s + 11/5·25-s + 0.192·27-s − 1.11·29-s − 0.348·33-s + 0.676·35-s + 0.657·37-s + 0.320·39-s − 1.56·41-s + 1.52·43-s − 0.596·45-s + 1.16·47-s + 1/7·49-s + 0.280·51-s + 1.07·55-s + 0.264·57-s − 0.512·61-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7728 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7728 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7728\)    =    \(2^{4} \cdot 3 \cdot 7 \cdot 23\)
Sign: $-1$
Analytic conductor: \(61.7083\)
Root analytic conductor: \(7.85546\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 7728,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) 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 \( 1 - T \)
7 \( 1 + T \)
23 \( 1 + T \)
good5 \( 1 + 4 T + p T^{2} \)
11 \( 1 + 2 T + p T^{2} \)
13 \( 1 - 2 T + p T^{2} \)
17 \( 1 - 2 T + p T^{2} \)
19 \( 1 - 2 T + p T^{2} \)
29 \( 1 + 6 T + p T^{2} \)
31 \( 1 + p T^{2} \)
37 \( 1 - 4 T + p T^{2} \)
41 \( 1 + 10 T + p T^{2} \)
43 \( 1 - 10 T + p T^{2} \)
47 \( 1 - 8 T + p T^{2} \)
53 \( 1 + p T^{2} \)
59 \( 1 + p T^{2} \)
61 \( 1 + 4 T + p T^{2} \)
67 \( 1 + 2 T + p T^{2} \)
71 \( 1 + 8 T + p T^{2} \)
73 \( 1 + 2 T + p T^{2} \)
79 \( 1 - 8 T + p T^{2} \)
83 \( 1 - 6 T + p T^{2} \)
89 \( 1 - 6 T + p T^{2} \)
97 \( 1 + 2 T + p T^{2} \)
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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

−7.56914376814153051010772356046, −7.19505884100231513035605738206, −6.20232109450845556998997367296, −5.33104556274669681253666068719, −4.45403955364002645103432993227, −3.76176959720027725991825598035, −3.32577856313445476099193287697, −2.48204174595099434538927314311, −1.11127285090253336780912946476, 0, 1.11127285090253336780912946476, 2.48204174595099434538927314311, 3.32577856313445476099193287697, 3.76176959720027725991825598035, 4.45403955364002645103432993227, 5.33104556274669681253666068719, 6.20232109450845556998997367296, 7.19505884100231513035605738206, 7.56914376814153051010772356046

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