Properties

Label 2-1680-21.20-c1-0-22
Degree $2$
Conductor $1680$
Sign $0.826 + 0.562i$
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 + (3.78 + 2.57i)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 + (0.826 + 0.562i)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

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.826 + 0.562i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.826 + 0.562i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $0.826 + 0.562i$
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: \((2,\ 1680,\ (\ :1/2),\ 0.826 + 0.562i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.236024299\)
\(L(\frac12)\) \(\approx\) \(1.236024299\)
\(L(\frac{3}{2})\) 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

−9.256301945614319272570455621084, −8.457197681737161626373474321842, −7.59457372906540162857201208562, −6.66999354164362559802279781319, −6.09599881009560452755648955527, −5.53355021939278712135459272038, −4.35529887909960174059320733332, −3.07454905151735214430194626922, −2.12330793705051119918805761847, −0.76978859066532871414294333515, 0.812684223410634466936775346280, 2.60017931275434419564797730464, 3.58695221748742815536589009596, 4.45386602807734933164847152011, 5.43140991260963380000306672247, 6.06627483853619244366556239203, 6.89195812063018316261049680758, 7.71795875863128272041431153424, 9.060250870469811205574543905592, 9.535262812770751366326608244719

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