Properties

Label 2-1980-1.1-c1-0-15
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 $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 5-s − 2·7-s + 11-s + 2·13-s − 8·17-s − 2·19-s − 8·23-s + 25-s − 2·35-s + 2·37-s + 6·43-s − 8·47-s − 3·49-s − 6·53-s + 55-s + 4·59-s + 10·61-s + 2·65-s − 12·67-s − 8·71-s + 10·73-s − 2·77-s − 14·79-s − 4·83-s − 8·85-s − 10·89-s − 4·91-s + ⋯
L(s)  = 1  + 0.447·5-s − 0.755·7-s + 0.301·11-s + 0.554·13-s − 1.94·17-s − 0.458·19-s − 1.66·23-s + 1/5·25-s − 0.338·35-s + 0.328·37-s + 0.914·43-s − 1.16·47-s − 3/7·49-s − 0.824·53-s + 0.134·55-s + 0.520·59-s + 1.28·61-s + 0.248·65-s − 1.46·67-s − 0.949·71-s + 1.17·73-s − 0.227·77-s − 1.57·79-s − 0.439·83-s − 0.867·85-s − 1.05·89-s − 0.419·91-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: \(1\)
Selberg data: \((2,\ 1980,\ (\ :1/2),\ -1)\)

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 \( 1 \)
5 \( 1 - T \)
11 \( 1 - T \)
good7 \( 1 + 2 T + p T^{2} \)
13 \( 1 - 2 T + p T^{2} \)
17 \( 1 + 8 T + p T^{2} \)
19 \( 1 + 2 T + p T^{2} \)
23 \( 1 + 8 T + p T^{2} \)
29 \( 1 + p T^{2} \)
31 \( 1 + p T^{2} \)
37 \( 1 - 2 T + p T^{2} \)
41 \( 1 + p T^{2} \)
43 \( 1 - 6 T + p T^{2} \)
47 \( 1 + 8 T + p T^{2} \)
53 \( 1 + 6 T + p T^{2} \)
59 \( 1 - 4 T + p T^{2} \)
61 \( 1 - 10 T + p T^{2} \)
67 \( 1 + 12 T + p T^{2} \)
71 \( 1 + 8 T + p T^{2} \)
73 \( 1 - 10 T + p T^{2} \)
79 \( 1 + 14 T + p T^{2} \)
83 \( 1 + 4 T + p T^{2} \)
89 \( 1 + 10 T + p T^{2} \)
97 \( 1 + 18 T + p T^{2} \)
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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

−8.815402478670686463760440783979, −8.169017980160617904405062114394, −6.99344125797315299349020742533, −6.36132389521375291447967401252, −5.83564097890541512904268284014, −4.55143367824604237806042969574, −3.87155450207857290945723404660, −2.69260207982730188842610789668, −1.74063382717034329602598274446, 0, 1.74063382717034329602598274446, 2.69260207982730188842610789668, 3.87155450207857290945723404660, 4.55143367824604237806042969574, 5.83564097890541512904268284014, 6.36132389521375291447967401252, 6.99344125797315299349020742533, 8.169017980160617904405062114394, 8.815402478670686463760440783979

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