Properties

Label 2-15-15.14-c24-0-31
Degree $2$
Conductor $15$
Sign $1$
Analytic cond. $54.7450$
Root an. cond. $7.39899$
Motivic weight $24$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 8.14e3·2-s − 5.31e5·3-s + 4.95e7·4-s − 2.44e8·5-s − 4.32e9·6-s + 2.66e11·8-s + 2.82e11·9-s − 1.98e12·10-s − 2.63e13·12-s + 1.29e14·15-s + 1.34e15·16-s − 4.32e14·17-s + 2.29e15·18-s + 1.90e15·19-s − 1.20e16·20-s + 3.72e16·23-s − 1.41e17·24-s + 5.96e16·25-s − 1.50e17·27-s + 1.05e18·30-s + 1.45e18·31-s + 6.44e18·32-s − 3.52e18·34-s + 1.39e19·36-s + 1.55e19·38-s − 6.51e19·40-s − 6.89e19·45-s + ⋯
L(s)  = 1  + 1.98·2-s − 3-s + 2.95·4-s − 5-s − 1.98·6-s + 3.88·8-s + 9-s − 1.98·10-s − 2.95·12-s + 15-s + 4.76·16-s − 0.742·17-s + 1.98·18-s + 0.860·19-s − 2.95·20-s + 1.69·23-s − 3.88·24-s + 25-s − 27-s + 1.98·30-s + 1.85·31-s + 5.58·32-s − 1.47·34-s + 2.95·36-s + 1.71·38-s − 3.88·40-s − 45-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 15 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(25-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 15 ^{s/2} \, \Gamma_{\C}(s+12) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(15\)    =    \(3 \cdot 5\)
Sign: $1$
Analytic conductor: \(54.7450\)
Root analytic conductor: \(7.39899\)
Motivic weight: \(24\)
Rational: yes
Arithmetic: yes
Character: $\chi_{15} (14, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 15,\ (\ :12),\ 1)\)

Particular Values

\(L(\frac{25}{2})\) \(\approx\) \(5.527767141\)
\(L(\frac12)\) \(\approx\) \(5.527767141\)
\(L(13)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 + p^{12} T \)
5 \( 1 + p^{12} T \)
good2 \( 1 - 8143 T + p^{24} T^{2} \)
7 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
11 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
13 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
17 \( 1 + 432524144062082 T + p^{24} T^{2} \)
19 \( 1 - 1904424373265762 T + p^{24} T^{2} \)
23 \( 1 - 37214344554868798 T + p^{24} T^{2} \)
29 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
31 \( 1 - 1458725602323329282 T + p^{24} T^{2} \)
37 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
41 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
43 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
47 \( 1 - 51418335280297668478 T + p^{24} T^{2} \)
53 \( 1 + \)\(34\!\cdots\!22\)\( T + p^{24} T^{2} \)
59 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
61 \( 1 + \)\(52\!\cdots\!18\)\( T + p^{24} T^{2} \)
67 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
71 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
73 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
79 \( 1 + \)\(20\!\cdots\!78\)\( T + p^{24} T^{2} \)
83 \( 1 - \)\(25\!\cdots\!38\)\( T + p^{24} T^{2} \)
89 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
97 \( ( 1 - p^{12} T )( 1 + p^{12} T ) \)
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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

−13.55571330915529829283217657340, −12.41604745351859331430990182719, −11.58197295983240027769016140130, −10.72314002369396620659421421191, −7.44411685358830076027684109270, −6.47556373397802188895733843288, −5.08693055766113894876843730158, −4.27519131185009954580365468712, −2.94980983629975211166127980006, −1.08793500955262502783059938238, 1.08793500955262502783059938238, 2.94980983629975211166127980006, 4.27519131185009954580365468712, 5.08693055766113894876843730158, 6.47556373397802188895733843288, 7.44411685358830076027684109270, 10.72314002369396620659421421191, 11.58197295983240027769016140130, 12.41604745351859331430990182719, 13.55571330915529829283217657340

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