Properties

Label 2-15870-1.1-c1-0-14
Degree $2$
Conductor $15870$
Sign $1$
Analytic cond. $126.722$
Root an. cond. $11.2571$
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  − 2-s + 3-s + 4-s + 5-s − 6-s + 4·7-s − 8-s + 9-s − 10-s + 12-s + 2·13-s − 4·14-s + 15-s + 16-s − 6·17-s − 18-s + 4·19-s + 20-s + 4·21-s − 24-s + 25-s − 2·26-s + 27-s + 4·28-s − 6·29-s − 30-s + 8·31-s + ⋯
L(s)  = 1  − 0.707·2-s + 0.577·3-s + 1/2·4-s + 0.447·5-s − 0.408·6-s + 1.51·7-s − 0.353·8-s + 1/3·9-s − 0.316·10-s + 0.288·12-s + 0.554·13-s − 1.06·14-s + 0.258·15-s + 1/4·16-s − 1.45·17-s − 0.235·18-s + 0.917·19-s + 0.223·20-s + 0.872·21-s − 0.204·24-s + 1/5·25-s − 0.392·26-s + 0.192·27-s + 0.755·28-s − 1.11·29-s − 0.182·30-s + 1.43·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 15870 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 15870 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(15870\)    =    \(2 \cdot 3 \cdot 5 \cdot 23^{2}\)
Sign: $1$
Analytic conductor: \(126.722\)
Root analytic conductor: \(11.2571\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 15870,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.898497428\)
\(L(\frac12)\) \(\approx\) \(2.898497428\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + T \)
3 \( 1 - T \)
5 \( 1 - T \)
23 \( 1 \)
good7 \( 1 - 4 T + p T^{2} \)
11 \( 1 + p T^{2} \)
13 \( 1 - 2 T + p T^{2} \)
17 \( 1 + 6 T + p T^{2} \)
19 \( 1 - 4 T + p T^{2} \)
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 \( 1 - 4 T + p T^{2} \)
47 \( 1 + p T^{2} \)
53 \( 1 - 6 T + p T^{2} \)
59 \( 1 + p T^{2} \)
61 \( 1 - 10 T + p T^{2} \)
67 \( 1 - 4 T + p T^{2} \)
71 \( 1 + p T^{2} \)
73 \( 1 - 2 T + p T^{2} \)
79 \( 1 + 8 T + p T^{2} \)
83 \( 1 + 12 T + p T^{2} \)
89 \( 1 + 18 T + p T^{2} \)
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

−15.75054123449500, −15.52913183043951, −14.96835068044645, −14.21194428190505, −13.93798746870904, −13.30279084920340, −12.71962049010701, −11.77506079467066, −11.35982396552248, −10.99985628159299, −10.15786100374618, −9.780497548953993, −8.835392637095929, −8.665399663052919, −8.105084118662146, −7.356333895443242, −6.926685814301591, −6.054143852457151, −5.356840629189720, −4.649118417676914, −3.973462428122115, −3.003304100633618, −2.163691130220062, −1.690188940652652, −0.8262954534671604, 0.8262954534671604, 1.690188940652652, 2.163691130220062, 3.003304100633618, 3.973462428122115, 4.649118417676914, 5.356840629189720, 6.054143852457151, 6.926685814301591, 7.356333895443242, 8.105084118662146, 8.665399663052919, 8.835392637095929, 9.780497548953993, 10.15786100374618, 10.99985628159299, 11.35982396552248, 11.77506079467066, 12.71962049010701, 13.30279084920340, 13.93798746870904, 14.21194428190505, 14.96835068044645, 15.52913183043951, 15.75054123449500

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