Properties

Label 2-78-1.1-c15-0-20
Degree $2$
Conductor $78$
Sign $-1$
Analytic cond. $111.300$
Root an. cond. $10.5499$
Motivic weight $15$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 128·2-s − 2.18e3·3-s + 1.63e4·4-s − 8.04e4·5-s − 2.79e5·6-s + 4.25e5·7-s + 2.09e6·8-s + 4.78e6·9-s − 1.03e7·10-s + 1.87e7·11-s − 3.58e7·12-s − 6.27e7·13-s + 5.44e7·14-s + 1.76e8·15-s + 2.68e8·16-s − 1.90e9·17-s + 6.12e8·18-s + 4.03e8·19-s − 1.31e9·20-s − 9.30e8·21-s + 2.40e9·22-s + 2.06e10·23-s − 4.58e9·24-s − 2.40e10·25-s − 8.03e9·26-s − 1.04e10·27-s + 6.97e9·28-s + ⋯
L(s)  = 1  + 0.707·2-s − 0.577·3-s + 0.5·4-s − 0.460·5-s − 0.408·6-s + 0.195·7-s + 0.353·8-s + 0.333·9-s − 0.325·10-s + 0.290·11-s − 0.288·12-s − 0.277·13-s + 0.138·14-s + 0.265·15-s + 0.250·16-s − 1.12·17-s + 0.235·18-s + 0.103·19-s − 0.230·20-s − 0.112·21-s + 0.205·22-s + 1.26·23-s − 0.204·24-s − 0.787·25-s − 0.196·26-s − 0.192·27-s + 0.0976·28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 78 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(16-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 78 ^{s/2} \, \Gamma_{\C}(s+15/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(78\)    =    \(2 \cdot 3 \cdot 13\)
Sign: $-1$
Analytic conductor: \(111.300\)
Root analytic conductor: \(10.5499\)
Motivic weight: \(15\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 78,\ (\ :15/2),\ -1)\)

Particular Values

\(L(8)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{17}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - 128T \)
3 \( 1 + 2.18e3T \)
13 \( 1 + 6.27e7T \)
good5 \( 1 + 8.04e4T + 3.05e10T^{2} \)
7 \( 1 - 4.25e5T + 4.74e12T^{2} \)
11 \( 1 - 1.87e7T + 4.17e15T^{2} \)
17 \( 1 + 1.90e9T + 2.86e18T^{2} \)
19 \( 1 - 4.03e8T + 1.51e19T^{2} \)
23 \( 1 - 2.06e10T + 2.66e20T^{2} \)
29 \( 1 - 5.56e10T + 8.62e21T^{2} \)
31 \( 1 - 2.47e11T + 2.34e22T^{2} \)
37 \( 1 + 3.26e11T + 3.33e23T^{2} \)
41 \( 1 + 1.74e12T + 1.55e24T^{2} \)
43 \( 1 - 2.34e12T + 3.17e24T^{2} \)
47 \( 1 + 4.04e12T + 1.20e25T^{2} \)
53 \( 1 - 1.37e13T + 7.31e25T^{2} \)
59 \( 1 + 3.24e12T + 3.65e26T^{2} \)
61 \( 1 + 4.49e13T + 6.02e26T^{2} \)
67 \( 1 - 8.68e13T + 2.46e27T^{2} \)
71 \( 1 + 4.94e13T + 5.87e27T^{2} \)
73 \( 1 + 1.72e14T + 8.90e27T^{2} \)
79 \( 1 + 2.64e14T + 2.91e28T^{2} \)
83 \( 1 + 2.90e14T + 6.11e28T^{2} \)
89 \( 1 + 3.43e14T + 1.74e29T^{2} \)
97 \( 1 + 7.85e14T + 6.33e29T^{2} \)
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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

−11.26732991080079620806155116602, −10.10554740737834991466799449521, −8.594895273896312142726458835148, −7.23669316420554249743064351497, −6.32455416657873170619973215839, −5.01057427319683109582010884308, −4.19029324698499320408484023098, −2.81368408913742127548972492668, −1.37410863845763963938254475682, 0, 1.37410863845763963938254475682, 2.81368408913742127548972492668, 4.19029324698499320408484023098, 5.01057427319683109582010884308, 6.32455416657873170619973215839, 7.23669316420554249743064351497, 8.594895273896312142726458835148, 10.10554740737834991466799449521, 11.26732991080079620806155116602

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