Properties

Label 2-15-1.1-c17-0-11
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  + 346.·2-s + 6.56e3·3-s − 1.10e4·4-s + 3.90e5·5-s + 2.27e6·6-s − 1.80e7·7-s − 4.92e7·8-s + 4.30e7·9-s + 1.35e8·10-s − 1.45e8·11-s − 7.23e7·12-s − 3.26e9·13-s − 6.26e9·14-s + 2.56e9·15-s − 1.56e10·16-s + 7.81e9·17-s + 1.49e10·18-s − 7.18e10·19-s − 4.30e9·20-s − 1.18e11·21-s − 5.03e10·22-s + 1.67e11·23-s − 3.23e11·24-s + 1.52e11·25-s − 1.13e12·26-s + 2.82e11·27-s + 1.99e11·28-s + ⋯
L(s)  = 1  + 0.957·2-s + 0.577·3-s − 0.0841·4-s + 0.447·5-s + 0.552·6-s − 1.18·7-s − 1.03·8-s + 0.333·9-s + 0.427·10-s − 0.204·11-s − 0.0485·12-s − 1.10·13-s − 1.13·14-s + 0.258·15-s − 0.908·16-s + 0.271·17-s + 0.319·18-s − 0.970·19-s − 0.0376·20-s − 0.684·21-s − 0.195·22-s + 0.445·23-s − 0.599·24-s + 0.200·25-s − 1.06·26-s + 0.192·27-s + 0.0997·28-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 \( 1 - 346.T + 1.31e5T^{2} \)
7 \( 1 + 1.80e7T + 2.32e14T^{2} \)
11 \( 1 + 1.45e8T + 5.05e17T^{2} \)
13 \( 1 + 3.26e9T + 8.65e18T^{2} \)
17 \( 1 - 7.81e9T + 8.27e20T^{2} \)
19 \( 1 + 7.18e10T + 5.48e21T^{2} \)
23 \( 1 - 1.67e11T + 1.41e23T^{2} \)
29 \( 1 - 1.63e11T + 7.25e24T^{2} \)
31 \( 1 + 5.38e12T + 2.25e25T^{2} \)
37 \( 1 + 3.68e13T + 4.56e26T^{2} \)
41 \( 1 + 7.52e12T + 2.61e27T^{2} \)
43 \( 1 + 5.73e13T + 5.87e27T^{2} \)
47 \( 1 - 1.42e14T + 2.66e28T^{2} \)
53 \( 1 - 8.01e14T + 2.05e29T^{2} \)
59 \( 1 - 9.64e14T + 1.27e30T^{2} \)
61 \( 1 + 1.29e15T + 2.24e30T^{2} \)
67 \( 1 - 4.71e15T + 1.10e31T^{2} \)
71 \( 1 - 9.29e15T + 2.96e31T^{2} \)
73 \( 1 + 6.86e15T + 4.74e31T^{2} \)
79 \( 1 - 1.21e16T + 1.81e32T^{2} \)
83 \( 1 + 3.23e16T + 4.21e32T^{2} \)
89 \( 1 + 4.91e16T + 1.37e33T^{2} \)
97 \( 1 - 1.26e17T + 5.95e33T^{2} \)
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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

−14.32572744533670611798593419045, −13.17906543526777722599927347812, −12.40162042529557743808462913412, −10.06848893939569723753244720963, −8.924554600898746256317057745820, −6.82218911287130375549995724698, −5.29767319805013976579092034304, −3.69708035424296950539879664778, −2.47722345968304888298274321211, 0, 2.47722345968304888298274321211, 3.69708035424296950539879664778, 5.29767319805013976579092034304, 6.82218911287130375549995724698, 8.924554600898746256317057745820, 10.06848893939569723753244720963, 12.40162042529557743808462913412, 13.17906543526777722599927347812, 14.32572744533670611798593419045

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