Properties

Label 2-855-1.1-c1-0-2
Degree $2$
Conductor $855$
Sign $1$
Analytic cond. $6.82720$
Root an. cond. $2.61289$
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  − 0.311·2-s − 1.90·4-s − 5-s − 4.42·7-s + 1.21·8-s + 0.311·10-s + 2.62·11-s + 0.474·13-s + 1.37·14-s + 3.42·16-s − 5.05·17-s − 19-s + 1.90·20-s − 0.815·22-s + 1.37·23-s + 25-s − 0.147·26-s + 8.42·28-s + 7.80·29-s + 1.24·31-s − 3.49·32-s + 1.57·34-s + 4.42·35-s + 4.47·37-s + 0.311·38-s − 1.21·40-s + 5.05·41-s + ⋯
L(s)  = 1  − 0.219·2-s − 0.951·4-s − 0.447·5-s − 1.67·7-s + 0.429·8-s + 0.0983·10-s + 0.790·11-s + 0.131·13-s + 0.368·14-s + 0.857·16-s − 1.22·17-s − 0.229·19-s + 0.425·20-s − 0.173·22-s + 0.287·23-s + 0.200·25-s − 0.0289·26-s + 1.59·28-s + 1.44·29-s + 0.223·31-s − 0.617·32-s + 0.269·34-s + 0.748·35-s + 0.735·37-s + 0.0504·38-s − 0.192·40-s + 0.788·41-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 855 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 855 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(855\)    =    \(3^{2} \cdot 5 \cdot 19\)
Sign: $1$
Analytic conductor: \(6.82720\)
Root analytic conductor: \(2.61289\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 855,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(0.7134010042\)
\(L(\frac12)\) \(\approx\) \(0.7134010042\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 \)
5 \( 1 + T \)
19 \( 1 + T \)
good2 \( 1 + 0.311T + 2T^{2} \)
7 \( 1 + 4.42T + 7T^{2} \)
11 \( 1 - 2.62T + 11T^{2} \)
13 \( 1 - 0.474T + 13T^{2} \)
17 \( 1 + 5.05T + 17T^{2} \)
23 \( 1 - 1.37T + 23T^{2} \)
29 \( 1 - 7.80T + 29T^{2} \)
31 \( 1 - 1.24T + 31T^{2} \)
37 \( 1 - 4.47T + 37T^{2} \)
41 \( 1 - 5.05T + 41T^{2} \)
43 \( 1 - 12.0T + 43T^{2} \)
47 \( 1 - 4.42T + 47T^{2} \)
53 \( 1 + 7.52T + 53T^{2} \)
59 \( 1 - 2.19T + 59T^{2} \)
61 \( 1 - 3.67T + 61T^{2} \)
67 \( 1 + 1.65T + 67T^{2} \)
71 \( 1 + 7.61T + 71T^{2} \)
73 \( 1 + 3.80T + 73T^{2} \)
79 \( 1 + 13.4T + 79T^{2} \)
83 \( 1 - 10.6T + 83T^{2} \)
89 \( 1 - 12.6T + 89T^{2} \)
97 \( 1 - 17.8T + 97T^{2} \)
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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

−10.03582582028932966596141572528, −9.125196098983774754650389017158, −8.885636190164400362017337584355, −7.67690418942320033626894640347, −6.66124902344977942817756341485, −6.00935922428841887255004310514, −4.54675987106302849956955571572, −3.90772688032708116190865295219, −2.80967890591919337285236118589, −0.69766084354299501149010578700, 0.69766084354299501149010578700, 2.80967890591919337285236118589, 3.90772688032708116190865295219, 4.54675987106302849956955571572, 6.00935922428841887255004310514, 6.66124902344977942817756341485, 7.67690418942320033626894640347, 8.885636190164400362017337584355, 9.125196098983774754650389017158, 10.03582582028932966596141572528

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