Properties

Label 2-1680-21.20-c1-0-6
Degree $2$
Conductor $1680$
Sign $0.373 - 0.927i$
Analytic cond. $13.4148$
Root an. cond. $3.66263$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (1.08 − 1.34i)3-s − 5-s + (−2.53 + 0.769i)7-s + (−0.641 − 2.93i)9-s + 1.53i·11-s + 1.09i·13-s + (−1.08 + 1.34i)15-s − 1.57·17-s + 4.32i·19-s + (−1.70 + 4.25i)21-s + 6.09i·23-s + 25-s + (−4.65 − 2.31i)27-s + 0.867i·29-s + 4.03i·31-s + ⋯
L(s)  = 1  + (0.626 − 0.779i)3-s − 0.447·5-s + (−0.956 + 0.291i)7-s + (−0.213 − 0.976i)9-s + 0.462i·11-s + 0.302i·13-s + (−0.280 + 0.348i)15-s − 0.381·17-s + 0.992i·19-s + (−0.373 + 0.927i)21-s + 1.27i·23-s + 0.200·25-s + (−0.895 − 0.445i)27-s + 0.161i·29-s + 0.724i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.373 - 0.927i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.373 - 0.927i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $0.373 - 0.927i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (881, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ 0.373 - 0.927i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.099590857\)
\(L(\frac12)\) \(\approx\) \(1.099590857\)
\(L(\frac{3}{2})\) 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 \( 1 + (-1.08 + 1.34i)T \)
5 \( 1 + T \)
7 \( 1 + (2.53 - 0.769i)T \)
good11 \( 1 - 1.53iT - 11T^{2} \)
13 \( 1 - 1.09iT - 13T^{2} \)
17 \( 1 + 1.57T + 17T^{2} \)
19 \( 1 - 4.32iT - 19T^{2} \)
23 \( 1 - 6.09iT - 23T^{2} \)
29 \( 1 - 0.867iT - 29T^{2} \)
31 \( 1 - 4.03iT - 31T^{2} \)
37 \( 1 - 11.4T + 37T^{2} \)
41 \( 1 - 2.70T + 41T^{2} \)
43 \( 1 - 1.74T + 43T^{2} \)
47 \( 1 + 10.3T + 47T^{2} \)
53 \( 1 - 4.51iT - 53T^{2} \)
59 \( 1 + 2.72T + 59T^{2} \)
61 \( 1 - 10.7iT - 61T^{2} \)
67 \( 1 + 3.69T + 67T^{2} \)
71 \( 1 - 11.7iT - 71T^{2} \)
73 \( 1 + 2.71iT - 73T^{2} \)
79 \( 1 - 7.04T + 79T^{2} \)
83 \( 1 + 6.68T + 83T^{2} \)
89 \( 1 - 4.13T + 89T^{2} \)
97 \( 1 + 16.9iT - 97T^{2} \)
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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

−9.437313084525242896435021503669, −8.689574445625346536633307207102, −7.83275089699117551830752767855, −7.20800827215645333090936582981, −6.42214525865989687462484474219, −5.67988376743223783906286400342, −4.27910534393873238165373737567, −3.42878960292492668987837602142, −2.56644682011090004064383387911, −1.35735736926566837878250479398, 0.39249533198076389114325171505, 2.49285837555507217971979394300, 3.19465135219185600492749539555, 4.13162943689102868319092615592, 4.80547074749733521802029412100, 6.01820889425487626259523683002, 6.80546033481323933707289657563, 7.83789744342599721062879071095, 8.421244826619210298908369028722, 9.374471214345540662095076810001

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