Properties

Label 2-1680-105.104-c1-0-31
Degree $2$
Conductor $1680$
Sign $0.779 + 0.626i$
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  + (−1.64 − 0.539i)3-s + (−1.30 − 1.81i)5-s + (−2.19 + 1.47i)7-s + (2.41 + 1.77i)9-s + 0.958i·11-s − 0.157·13-s + (1.16 + 3.69i)15-s − 2.51i·17-s + 1.98i·19-s + (4.41 − 1.23i)21-s − 2.67·23-s + (−1.60 + 4.73i)25-s + (−3.02 − 4.22i)27-s − 1.25i·29-s + 8.66i·31-s + ⋯
L(s)  = 1  + (−0.950 − 0.311i)3-s + (−0.582 − 0.812i)5-s + (−0.831 + 0.555i)7-s + (0.806 + 0.591i)9-s + 0.288i·11-s − 0.0436·13-s + (0.300 + 0.953i)15-s − 0.609i·17-s + 0.454i·19-s + (0.963 − 0.269i)21-s − 0.557·23-s + (−0.321 + 0.946i)25-s + (−0.582 − 0.813i)27-s − 0.232i·29-s + 1.55i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.779 + 0.626i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.779 + 0.626i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $0.779 + 0.626i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (209, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ 0.779 + 0.626i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.7612196025\)
\(L(\frac12)\) \(\approx\) \(0.7612196025\)
\(L(\frac{3}{2})\) 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 \( 1 + (1.64 + 0.539i)T \)
5 \( 1 + (1.30 + 1.81i)T \)
7 \( 1 + (2.19 - 1.47i)T \)
good11 \( 1 - 0.958iT - 11T^{2} \)
13 \( 1 + 0.157T + 13T^{2} \)
17 \( 1 + 2.51iT - 17T^{2} \)
19 \( 1 - 1.98iT - 19T^{2} \)
23 \( 1 + 2.67T + 23T^{2} \)
29 \( 1 + 1.25iT - 29T^{2} \)
31 \( 1 - 8.66iT - 31T^{2} \)
37 \( 1 - 2.29iT - 37T^{2} \)
41 \( 1 - 4.74T + 41T^{2} \)
43 \( 1 + 6.58iT - 43T^{2} \)
47 \( 1 - 5.60iT - 47T^{2} \)
53 \( 1 - 8.59T + 53T^{2} \)
59 \( 1 - 10.4T + 59T^{2} \)
61 \( 1 + 4.27iT - 61T^{2} \)
67 \( 1 + 13.8iT - 67T^{2} \)
71 \( 1 + 9.75iT - 71T^{2} \)
73 \( 1 - 4.43T + 73T^{2} \)
79 \( 1 + 0.517T + 79T^{2} \)
83 \( 1 + 18.1iT - 83T^{2} \)
89 \( 1 + 0.954T + 89T^{2} \)
97 \( 1 + 14.0T + 97T^{2} \)
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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

−9.301881711514189476873727616342, −8.472248089637252883632349165297, −7.57245980482963631611176585920, −6.84308614445169789448089018423, −5.96196747998859191992909075954, −5.23116011753849623886462785998, −4.45176105496932216315266114063, −3.38532209482748731895875795693, −1.94739353027625459270721104326, −0.56591660448229970397141938347, 0.68160766648316481616988575757, 2.57551538324143172405170428147, 3.82979155292808169066393307254, 4.14837837030374023700919820679, 5.54661133225979102115026539766, 6.25227168911992597764378105695, 6.94812770113853110570520213907, 7.59347207800766028801092971756, 8.669417750390517618433049515279, 9.876249508101202644075087573550

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