Properties

Label 2-768-1.1-c1-0-7
Degree $2$
Conductor $768$
Sign $1$
Analytic cond. $6.13251$
Root an. cond. $2.47639$
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  + 3-s + 3.46·5-s − 3.46·7-s + 9-s + 3.46·15-s + 6·17-s + 4·19-s − 3.46·21-s + 6.92·23-s + 6.99·25-s + 27-s − 3.46·29-s − 3.46·31-s − 11.9·35-s − 6.92·37-s + 6·41-s + 4·43-s + 3.46·45-s − 6.92·47-s + 4.99·49-s + 6·51-s − 3.46·53-s + 4·57-s − 12·59-s + 6.92·61-s − 3.46·63-s − 4·67-s + ⋯
L(s)  = 1  + 0.577·3-s + 1.54·5-s − 1.30·7-s + 0.333·9-s + 0.894·15-s + 1.45·17-s + 0.917·19-s − 0.755·21-s + 1.44·23-s + 1.39·25-s + 0.192·27-s − 0.643·29-s − 0.622·31-s − 2.02·35-s − 1.13·37-s + 0.937·41-s + 0.609·43-s + 0.516·45-s − 1.01·47-s + 0.714·49-s + 0.840·51-s − 0.475·53-s + 0.529·57-s − 1.56·59-s + 0.887·61-s − 0.436·63-s − 0.488·67-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 768 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(768\)    =    \(2^{8} \cdot 3\)
Sign: $1$
Analytic conductor: \(6.13251\)
Root analytic conductor: \(2.47639\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 768,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.242163661\)
\(L(\frac12)\) \(\approx\) \(2.242163661\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 - T \)
good5 \( 1 - 3.46T + 5T^{2} \)
7 \( 1 + 3.46T + 7T^{2} \)
11 \( 1 + 11T^{2} \)
13 \( 1 + 13T^{2} \)
17 \( 1 - 6T + 17T^{2} \)
19 \( 1 - 4T + 19T^{2} \)
23 \( 1 - 6.92T + 23T^{2} \)
29 \( 1 + 3.46T + 29T^{2} \)
31 \( 1 + 3.46T + 31T^{2} \)
37 \( 1 + 6.92T + 37T^{2} \)
41 \( 1 - 6T + 41T^{2} \)
43 \( 1 - 4T + 43T^{2} \)
47 \( 1 + 6.92T + 47T^{2} \)
53 \( 1 + 3.46T + 53T^{2} \)
59 \( 1 + 12T + 59T^{2} \)
61 \( 1 - 6.92T + 61T^{2} \)
67 \( 1 + 4T + 67T^{2} \)
71 \( 1 + 6.92T + 71T^{2} \)
73 \( 1 + 2T + 73T^{2} \)
79 \( 1 - 10.3T + 79T^{2} \)
83 \( 1 + 83T^{2} \)
89 \( 1 + 6T + 89T^{2} \)
97 \( 1 + 2T + 97T^{2} \)
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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

−10.01708505222310147168735736375, −9.465714208982566595750229259561, −9.039980779626859621063654855052, −7.64586829684534494324413764162, −6.79706933710280097510253097845, −5.88535346965831285894124540745, −5.17519834502749886916405280921, −3.46641820802356441166979549669, −2.79523610059826734126120834496, −1.40376133463709272202370477837, 1.40376133463709272202370477837, 2.79523610059826734126120834496, 3.46641820802356441166979549669, 5.17519834502749886916405280921, 5.88535346965831285894124540745, 6.79706933710280097510253097845, 7.64586829684534494324413764162, 9.039980779626859621063654855052, 9.465714208982566595750229259561, 10.01708505222310147168735736375

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