Properties

Label 2-221-1.1-c1-0-3
Degree $2$
Conductor $221$
Sign $1$
Analytic cond. $1.76469$
Root an. cond. $1.32841$
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 − 4-s + 4·5-s − 2·7-s + 3·8-s − 3·9-s − 4·10-s + 6·11-s − 13-s + 2·14-s − 16-s + 17-s + 3·18-s + 8·19-s − 4·20-s − 6·22-s + 4·23-s + 11·25-s + 26-s + 2·28-s − 6·29-s − 2·31-s − 5·32-s − 34-s − 8·35-s + 3·36-s − 8·37-s + ⋯
L(s)  = 1  − 0.707·2-s − 1/2·4-s + 1.78·5-s − 0.755·7-s + 1.06·8-s − 9-s − 1.26·10-s + 1.80·11-s − 0.277·13-s + 0.534·14-s − 1/4·16-s + 0.242·17-s + 0.707·18-s + 1.83·19-s − 0.894·20-s − 1.27·22-s + 0.834·23-s + 11/5·25-s + 0.196·26-s + 0.377·28-s − 1.11·29-s − 0.359·31-s − 0.883·32-s − 0.171·34-s − 1.35·35-s + 1/2·36-s − 1.31·37-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 221 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 221 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(221\)    =    \(13 \cdot 17\)
Sign: $1$
Analytic conductor: \(1.76469\)
Root analytic conductor: \(1.32841\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 221,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.9625124841\)
\(L(\frac12)\) \(\approx\) \(0.9625124841\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad13 \( 1 + T \)
17 \( 1 - T \)
good2 \( 1 + T + p T^{2} \)
3 \( 1 + p T^{2} \)
5 \( 1 - 4 T + p T^{2} \)
7 \( 1 + 2 T + p T^{2} \)
11 \( 1 - 6 T + p T^{2} \)
19 \( 1 - 8 T + p T^{2} \)
23 \( 1 - 4 T + p T^{2} \)
29 \( 1 + 6 T + p T^{2} \)
31 \( 1 + 2 T + p T^{2} \)
37 \( 1 + 8 T + p T^{2} \)
41 \( 1 + p T^{2} \)
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 \( 1 + 8 T + p T^{2} \)
71 \( 1 - 2 T + p T^{2} \)
73 \( 1 + p T^{2} \)
79 \( 1 + p T^{2} \)
83 \( 1 + 4 T + p T^{2} \)
89 \( 1 + 2 T + p T^{2} \)
97 \( 1 + 4 T + p T^{2} \)
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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

−12.33074006465255986744957695446, −11.07994593240930135269487219416, −9.869512132897372882653357218200, −9.322943758611247765109247318824, −8.927453830477445663714841294521, −7.21007453586963973825482314294, −6.08768553877125773113790739068, −5.18912921668629213715138999397, −3.29236659448974830069494656946, −1.43812357488337121846264292786, 1.43812357488337121846264292786, 3.29236659448974830069494656946, 5.18912921668629213715138999397, 6.08768553877125773113790739068, 7.21007453586963973825482314294, 8.927453830477445663714841294521, 9.322943758611247765109247318824, 9.869512132897372882653357218200, 11.07994593240930135269487219416, 12.33074006465255986744957695446

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