Properties

Label 2-1680-1.1-c1-0-3
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 + 4·11-s − 6·13-s + 15-s − 2·17-s + 8·19-s − 21-s − 4·23-s + 25-s − 27-s + 6·29-s − 4·31-s − 4·33-s − 35-s − 2·37-s + 6·39-s − 2·41-s + 12·43-s − 45-s + 49-s + 2·51-s + 2·53-s − 4·55-s − 8·57-s + ⋯
L(s)  = 1  − 0.577·3-s − 0.447·5-s + 0.377·7-s + 1/3·9-s + 1.20·11-s − 1.66·13-s + 0.258·15-s − 0.485·17-s + 1.83·19-s − 0.218·21-s − 0.834·23-s + 1/5·25-s − 0.192·27-s + 1.11·29-s − 0.718·31-s − 0.696·33-s − 0.169·35-s − 0.328·37-s + 0.960·39-s − 0.312·41-s + 1.82·43-s − 0.149·45-s + 1/7·49-s + 0.280·51-s + 0.274·53-s − 0.539·55-s − 1.05·57-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

\(L(1)\) \(\approx\) \(1.301579302\)
\(L(\frac12)\) \(\approx\) \(1.301579302\)
\(L(\frac{3}{2})\) 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 \( 1 - 4 T + p T^{2} \)
13 \( 1 + 6 T + p T^{2} \)
17 \( 1 + 2 T + p T^{2} \)
19 \( 1 - 8 T + p T^{2} \)
23 \( 1 + 4 T + p T^{2} \)
29 \( 1 - 6 T + p T^{2} \)
31 \( 1 + 4 T + p T^{2} \)
37 \( 1 + 2 T + p T^{2} \)
41 \( 1 + 2 T + p T^{2} \)
43 \( 1 - 12 T + p T^{2} \)
47 \( 1 + p T^{2} \)
53 \( 1 - 2 T + p T^{2} \)
59 \( 1 - 4 T + p T^{2} \)
61 \( 1 - 6 T + p T^{2} \)
67 \( 1 - 4 T + p T^{2} \)
71 \( 1 + 8 T + p T^{2} \)
73 \( 1 - 6 T + p T^{2} \)
79 \( 1 - 16 T + p T^{2} \)
83 \( 1 - 4 T + p T^{2} \)
89 \( 1 + 18 T + p T^{2} \)
97 \( 1 - 6 T + p T^{2} \)
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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

−9.489822071500421838123299377246, −8.589885155018342735645511409941, −7.48194518995166404806621976813, −7.15438604252358823564137535690, −6.11635555330347224666598894965, −5.15730774215430543096989146351, −4.48701468714906907010956142437, −3.52333401998483593075569376220, −2.20468163292461647890581529227, −0.825713056820135641492552995973, 0.825713056820135641492552995973, 2.20468163292461647890581529227, 3.52333401998483593075569376220, 4.48701468714906907010956142437, 5.15730774215430543096989146351, 6.11635555330347224666598894965, 7.15438604252358823564137535690, 7.48194518995166404806621976813, 8.589885155018342735645511409941, 9.489822071500421838123299377246

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