Properties

Label 2-15-1.1-c17-0-5
Degree $2$
Conductor $15$
Sign $-1$
Analytic cond. $27.4833$
Root an. cond. $5.24245$
Motivic weight $17$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 670.·2-s − 6.56e3·3-s + 3.18e5·4-s − 3.90e5·5-s + 4.39e6·6-s − 2.70e7·7-s − 1.25e8·8-s + 4.30e7·9-s + 2.61e8·10-s + 1.01e9·11-s − 2.09e9·12-s − 1.04e9·13-s + 1.81e10·14-s + 2.56e9·15-s + 4.25e10·16-s + 2.00e10·17-s − 2.88e10·18-s + 1.64e10·19-s − 1.24e11·20-s + 1.77e11·21-s − 6.81e11·22-s + 5.92e11·23-s + 8.25e11·24-s + 1.52e11·25-s + 7.03e11·26-s − 2.82e11·27-s − 8.62e12·28-s + ⋯
L(s)  = 1  − 1.85·2-s − 0.577·3-s + 2.43·4-s − 0.447·5-s + 1.06·6-s − 1.77·7-s − 2.65·8-s + 0.333·9-s + 0.828·10-s + 1.42·11-s − 1.40·12-s − 0.356·13-s + 3.28·14-s + 0.258·15-s + 2.47·16-s + 0.695·17-s − 0.617·18-s + 0.222·19-s − 1.08·20-s + 1.02·21-s − 2.64·22-s + 1.57·23-s + 1.53·24-s + 0.200·25-s + 0.660·26-s − 0.192·27-s − 4.31·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 15 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(18-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 15 ^{s/2} \, \Gamma_{\C}(s+17/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(15\)    =    \(3 \cdot 5\)
Sign: $-1$
Analytic conductor: \(27.4833\)
Root analytic conductor: \(5.24245\)
Motivic weight: \(17\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 15,\ (\ :17/2),\ -1)\)

Particular Values

\(L(9)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{19}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 + 6.56e3T \)
5 \( 1 + 3.90e5T \)
good2 \( 1 + 670.T + 1.31e5T^{2} \)
7 \( 1 + 2.70e7T + 2.32e14T^{2} \)
11 \( 1 - 1.01e9T + 5.05e17T^{2} \)
13 \( 1 + 1.04e9T + 8.65e18T^{2} \)
17 \( 1 - 2.00e10T + 8.27e20T^{2} \)
19 \( 1 - 1.64e10T + 5.48e21T^{2} \)
23 \( 1 - 5.92e11T + 1.41e23T^{2} \)
29 \( 1 - 4.83e11T + 7.25e24T^{2} \)
31 \( 1 + 5.20e12T + 2.25e25T^{2} \)
37 \( 1 - 3.82e13T + 4.56e26T^{2} \)
41 \( 1 + 6.56e13T + 2.61e27T^{2} \)
43 \( 1 + 5.83e13T + 5.87e27T^{2} \)
47 \( 1 - 7.43e12T + 2.66e28T^{2} \)
53 \( 1 + 3.01e14T + 2.05e29T^{2} \)
59 \( 1 + 3.44e14T + 1.27e30T^{2} \)
61 \( 1 + 2.43e15T + 2.24e30T^{2} \)
67 \( 1 - 1.19e15T + 1.10e31T^{2} \)
71 \( 1 - 5.42e15T + 2.96e31T^{2} \)
73 \( 1 + 5.84e15T + 4.74e31T^{2} \)
79 \( 1 - 2.03e15T + 1.81e32T^{2} \)
83 \( 1 + 1.18e16T + 4.21e32T^{2} \)
89 \( 1 + 2.43e16T + 1.37e33T^{2} \)
97 \( 1 + 1.06e17T + 5.95e33T^{2} \)
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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

−15.23411506545427292754956682731, −12.50874191569520466081417252753, −11.34098672444323030643383322282, −9.907781574172902872803196385654, −9.097293480701272107463762572998, −7.22510581615697899117334048614, −6.34020726083234593095457565294, −3.21676616608390694558560197309, −1.11212651359037415654593838235, 0, 1.11212651359037415654593838235, 3.21676616608390694558560197309, 6.34020726083234593095457565294, 7.22510581615697899117334048614, 9.097293480701272107463762572998, 9.907781574172902872803196385654, 11.34098672444323030643383322282, 12.50874191569520466081417252753, 15.23411506545427292754956682731

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