Properties

Label 2-87-1.1-c1-0-4
Degree $2$
Conductor $87$
Sign $1$
Analytic cond. $0.694698$
Root an. cond. $0.833485$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 1.61·2-s + 3-s + 0.618·4-s − 1.23·5-s + 1.61·6-s − 4.23·7-s − 2.23·8-s + 9-s − 2.00·10-s + 4.23·11-s + 0.618·12-s + 3.47·13-s − 6.85·14-s − 1.23·15-s − 4.85·16-s + 3·17-s + 1.61·18-s − 2.76·19-s − 0.763·20-s − 4.23·21-s + 6.85·22-s + 5.70·23-s − 2.23·24-s − 3.47·25-s + 5.61·26-s + 27-s − 2.61·28-s + ⋯
L(s)  = 1  + 1.14·2-s + 0.577·3-s + 0.309·4-s − 0.552·5-s + 0.660·6-s − 1.60·7-s − 0.790·8-s + 0.333·9-s − 0.632·10-s + 1.27·11-s + 0.178·12-s + 0.962·13-s − 1.83·14-s − 0.319·15-s − 1.21·16-s + 0.727·17-s + 0.381·18-s − 0.634·19-s − 0.170·20-s − 0.924·21-s + 1.46·22-s + 1.19·23-s − 0.456·24-s − 0.694·25-s + 1.10·26-s + 0.192·27-s − 0.494·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 87 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 87 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(87\)    =    \(3 \cdot 29\)
Sign: $1$
Analytic conductor: \(0.694698\)
Root analytic conductor: \(0.833485\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 87,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(1.529140797\)
\(L(\frac12)\) \(\approx\) \(1.529140797\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 - T \)
29 \( 1 + T \)
good2 \( 1 - 1.61T + 2T^{2} \)
5 \( 1 + 1.23T + 5T^{2} \)
7 \( 1 + 4.23T + 7T^{2} \)
11 \( 1 - 4.23T + 11T^{2} \)
13 \( 1 - 3.47T + 13T^{2} \)
17 \( 1 - 3T + 17T^{2} \)
19 \( 1 + 2.76T + 19T^{2} \)
23 \( 1 - 5.70T + 23T^{2} \)
31 \( 1 + 9.70T + 31T^{2} \)
37 \( 1 - 0.763T + 37T^{2} \)
41 \( 1 - 2T + 41T^{2} \)
43 \( 1 - 4T + 43T^{2} \)
47 \( 1 + 8.70T + 47T^{2} \)
53 \( 1 - 6.76T + 53T^{2} \)
59 \( 1 + 4.47T + 59T^{2} \)
61 \( 1 + 0.763T + 61T^{2} \)
67 \( 1 - 9.18T + 67T^{2} \)
71 \( 1 + 0.763T + 71T^{2} \)
73 \( 1 - 11.2T + 73T^{2} \)
79 \( 1 + 17.2T + 79T^{2} \)
83 \( 1 + 14.9T + 83T^{2} \)
89 \( 1 - 5T + 89T^{2} \)
97 \( 1 + 12.6T + 97T^{2} \)
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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

−14.13784562908028887463274991736, −13.08126410111092776195400260092, −12.54842031959081348843701926982, −11.31442079433776982465479980330, −9.594911363765538106327790540763, −8.787088278780598681714873590880, −6.96227678862324707950148129167, −5.92447139966814564047583105421, −3.96740643999368951175333635084, −3.33284344106940796359913592368, 3.33284344106940796359913592368, 3.96740643999368951175333635084, 5.92447139966814564047583105421, 6.96227678862324707950148129167, 8.787088278780598681714873590880, 9.594911363765538106327790540763, 11.31442079433776982465479980330, 12.54842031959081348843701926982, 13.08126410111092776195400260092, 14.13784562908028887463274991736

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