Properties

Label 2-1980-1.1-c1-0-0
Degree $2$
Conductor $1980$
Sign $1$
Analytic cond. $15.8103$
Root an. cond. $3.97622$
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  − 5-s − 4·7-s + 11-s − 4·13-s − 4·19-s + 6·23-s + 25-s + 6·29-s + 8·31-s + 4·35-s + 2·37-s − 6·41-s + 8·43-s − 6·47-s + 9·49-s + 6·53-s − 55-s + 12·59-s + 2·61-s + 4·65-s − 10·67-s + 12·71-s − 16·73-s − 4·77-s + 8·79-s − 6·89-s + 16·91-s + ⋯
L(s)  = 1  − 0.447·5-s − 1.51·7-s + 0.301·11-s − 1.10·13-s − 0.917·19-s + 1.25·23-s + 1/5·25-s + 1.11·29-s + 1.43·31-s + 0.676·35-s + 0.328·37-s − 0.937·41-s + 1.21·43-s − 0.875·47-s + 9/7·49-s + 0.824·53-s − 0.134·55-s + 1.56·59-s + 0.256·61-s + 0.496·65-s − 1.22·67-s + 1.42·71-s − 1.87·73-s − 0.455·77-s + 0.900·79-s − 0.635·89-s + 1.67·91-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1980 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1980 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1980\)    =    \(2^{2} \cdot 3^{2} \cdot 5 \cdot 11\)
Sign: $1$
Analytic conductor: \(15.8103\)
Root analytic conductor: \(3.97622\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 1980,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.063789879\)
\(L(\frac12)\) \(\approx\) \(1.063789879\)
\(L(\frac{3}{2})\) 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 \( 1 \)
5 \( 1 + T \)
11 \( 1 - T \)
good7 \( 1 + 4 T + p T^{2} \)
13 \( 1 + 4 T + p T^{2} \)
17 \( 1 + p T^{2} \)
19 \( 1 + 4 T + p T^{2} \)
23 \( 1 - 6 T + p T^{2} \)
29 \( 1 - 6 T + p T^{2} \)
31 \( 1 - 8 T + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 + 6 T + p T^{2} \)
43 \( 1 - 8 T + p T^{2} \)
47 \( 1 + 6 T + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 - 12 T + p T^{2} \)
61 \( 1 - 2 T + p T^{2} \)
67 \( 1 + 10 T + p T^{2} \)
71 \( 1 - 12 T + p T^{2} \)
73 \( 1 + 16 T + p T^{2} \)
79 \( 1 - 8 T + p T^{2} \)
83 \( 1 + p T^{2} \)
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

−9.143388368464316920898426683170, −8.521834734599108865403120172911, −7.47601643346092433487754151539, −6.73777549197838954142221486732, −6.25760067471114060229971558685, −5.03835627849849618692157113012, −4.22887800367054726811563143272, −3.20327356214192940251353293177, −2.49581293620386904412683138099, −0.66380362494939169440974615231, 0.66380362494939169440974615231, 2.49581293620386904412683138099, 3.20327356214192940251353293177, 4.22887800367054726811563143272, 5.03835627849849618692157113012, 6.25760067471114060229971558685, 6.73777549197838954142221486732, 7.47601643346092433487754151539, 8.521834734599108865403120172911, 9.143388368464316920898426683170

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