Properties

Label 2-1680-1.1-c1-0-1
Degree $2$
Conductor $1680$
Sign $1$
Analytic cond. $13.4148$
Root an. cond. $3.66263$
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  − 3-s − 5-s − 7-s + 9-s + 2·13-s + 15-s − 6·17-s + 4·19-s + 21-s + 25-s − 27-s − 6·29-s + 4·31-s + 35-s + 2·37-s − 2·39-s + 6·41-s − 8·43-s − 45-s + 12·47-s + 49-s + 6·51-s + 6·53-s − 4·57-s + 12·59-s + 2·61-s − 63-s + ⋯
L(s)  = 1  − 0.577·3-s − 0.447·5-s − 0.377·7-s + 1/3·9-s + 0.554·13-s + 0.258·15-s − 1.45·17-s + 0.917·19-s + 0.218·21-s + 1/5·25-s − 0.192·27-s − 1.11·29-s + 0.718·31-s + 0.169·35-s + 0.328·37-s − 0.320·39-s + 0.937·41-s − 1.21·43-s − 0.149·45-s + 1.75·47-s + 1/7·49-s + 0.840·51-s + 0.824·53-s − 0.529·57-s + 1.56·59-s + 0.256·61-s − 0.125·63-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $1$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.095985206\)
\(L(\frac12)\) \(\approx\) \(1.095985206\)
\(L(\frac{3}{2})\) 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 \( 1 + T \)
5 \( 1 + T \)
7 \( 1 + T \)
good11 \( 1 + p T^{2} \)
13 \( 1 - 2 T + p T^{2} \)
17 \( 1 + 6 T + p T^{2} \)
19 \( 1 - 4 T + p T^{2} \)
23 \( 1 + p T^{2} \)
29 \( 1 + 6 T + p T^{2} \)
31 \( 1 - 4 T + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 - 6 T + p T^{2} \)
43 \( 1 + 8 T + p T^{2} \)
47 \( 1 - 12 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 - 12 T + p T^{2} \)
61 \( 1 - 2 T + p T^{2} \)
67 \( 1 + 8 T + p T^{2} \)
71 \( 1 + p T^{2} \)
73 \( 1 - 14 T + p T^{2} \)
79 \( 1 - 16 T + p T^{2} \)
83 \( 1 + 12 T + p T^{2} \)
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

−9.314652961268928418960091821791, −8.647026888430366294854058821975, −7.64537707540215722485320944275, −6.91673575142178820615272805521, −6.16116790751690085616531757265, −5.30537393915954566746162190631, −4.32773350578479900565119001608, −3.54574519606089903353001249150, −2.27238370722428728570015712288, −0.74026101682650381544781632886, 0.74026101682650381544781632886, 2.27238370722428728570015712288, 3.54574519606089903353001249150, 4.32773350578479900565119001608, 5.30537393915954566746162190631, 6.16116790751690085616531757265, 6.91673575142178820615272805521, 7.64537707540215722485320944275, 8.647026888430366294854058821975, 9.314652961268928418960091821791

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