Properties

Label 2-1680-21.20-c1-0-30
Degree $2$
Conductor $1680$
Sign $-0.0406 - 0.999i$
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  + (1.18 + 1.26i)3-s + 5-s + (2 + 1.73i)7-s + (−0.186 + 2.99i)9-s + 2.52i·11-s + 4.10i·13-s + (1.18 + 1.26i)15-s + 4.37·17-s − 3.46i·19-s + (0.186 + 4.57i)21-s − 8.51i·23-s + 25-s + (−4.00 + 3.31i)27-s + 0.939i·29-s + 3.46i·31-s + ⋯
L(s)  = 1  + (0.684 + 0.728i)3-s + 0.447·5-s + (0.755 + 0.654i)7-s + (−0.0620 + 0.998i)9-s + 0.761i·11-s + 1.13i·13-s + (0.306 + 0.325i)15-s + 1.06·17-s − 0.794i·19-s + (0.0406 + 0.999i)21-s − 1.77i·23-s + 0.200·25-s + (−0.769 + 0.638i)27-s + 0.174i·29-s + 0.622i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.0406 - 0.999i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.0406 - 0.999i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-0.0406 - 0.999i$
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: \((2,\ 1680,\ (\ :1/2),\ -0.0406 - 0.999i)\)

Particular Values

\(L(1)\) \(\approx\) \(2.575328227\)
\(L(\frac12)\) \(\approx\) \(2.575328227\)
\(L(\frac{3}{2})\) 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 \( 1 + (-1.18 - 1.26i)T \)
5 \( 1 - T \)
7 \( 1 + (-2 - 1.73i)T \)
good11 \( 1 - 2.52iT - 11T^{2} \)
13 \( 1 - 4.10iT - 13T^{2} \)
17 \( 1 - 4.37T + 17T^{2} \)
19 \( 1 + 3.46iT - 19T^{2} \)
23 \( 1 + 8.51iT - 23T^{2} \)
29 \( 1 - 0.939iT - 29T^{2} \)
31 \( 1 - 3.46iT - 31T^{2} \)
37 \( 1 + 6.74T + 37T^{2} \)
41 \( 1 + 6T + 41T^{2} \)
43 \( 1 + 4.74T + 43T^{2} \)
47 \( 1 - 1.62T + 47T^{2} \)
53 \( 1 + 1.87iT - 53T^{2} \)
59 \( 1 - 8.74T + 59T^{2} \)
61 \( 1 + 6.92iT - 61T^{2} \)
67 \( 1 + 4.74T + 67T^{2} \)
71 \( 1 + 0.294iT - 71T^{2} \)
73 \( 1 + 6.92iT - 73T^{2} \)
79 \( 1 - 2.37T + 79T^{2} \)
83 \( 1 - 17.4T + 83T^{2} \)
89 \( 1 - 14.7T + 89T^{2} \)
97 \( 1 - 11.0iT - 97T^{2} \)
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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

−9.438242648325353165482707984201, −8.822575378031471484475864479674, −8.251105632794963590368504380644, −7.23055321861020345182662547133, −6.38009393125032739416427796896, −4.97434084130805895185228047897, −4.89054616005883675093584284413, −3.63943847877238736800803743141, −2.48347355948800679712497443321, −1.76258207761313104480763683610, 0.949243845249086983080356334854, 1.82793391029484546896910992866, 3.19302991078330830961033496169, 3.74834876046584214026066090217, 5.31345107649271014879651025619, 5.81164826170481572392949368662, 6.94008390048820087339990649830, 7.81067295396792885960194970919, 8.076724171709400873716758310574, 9.019158213140981548216300047336

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