Properties

Label 2-1680-21.20-c1-0-55
Degree $2$
Conductor $1680$
Sign $0.0232 + 0.999i$
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  + (1.72 + 0.0964i)3-s − 5-s + (−0.208 − 2.63i)7-s + (2.98 + 0.333i)9-s − 1.71i·11-s − 3.11i·13-s + (−1.72 − 0.0964i)15-s − 3.59·17-s + 1.04i·19-s + (−0.106 − 4.58i)21-s + 0.587i·23-s + 25-s + (5.12 + 0.864i)27-s − 4.47i·29-s − 8.51i·31-s + ⋯
L(s)  = 1  + (0.998 + 0.0556i)3-s − 0.447·5-s + (−0.0789 − 0.996i)7-s + (0.993 + 0.111i)9-s − 0.516i·11-s − 0.863i·13-s + (−0.446 − 0.0249i)15-s − 0.871·17-s + 0.239i·19-s + (−0.0232 − 0.999i)21-s + 0.122i·23-s + 0.200·25-s + (0.986 + 0.166i)27-s − 0.830i·29-s − 1.52i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.0232 + 0.999i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.0232 + 0.999i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $0.0232 + 0.999i$
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: \((2,\ 1680,\ (\ :1/2),\ 0.0232 + 0.999i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.923162031\)
\(L(\frac12)\) \(\approx\) \(1.923162031\)
\(L(\frac{3}{2})\) 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 \( 1 + (-1.72 - 0.0964i)T \)
5 \( 1 + T \)
7 \( 1 + (0.208 + 2.63i)T \)
good11 \( 1 + 1.71iT - 11T^{2} \)
13 \( 1 + 3.11iT - 13T^{2} \)
17 \( 1 + 3.59T + 17T^{2} \)
19 \( 1 - 1.04iT - 19T^{2} \)
23 \( 1 - 0.587iT - 23T^{2} \)
29 \( 1 + 4.47iT - 29T^{2} \)
31 \( 1 + 8.51iT - 31T^{2} \)
37 \( 1 + 7.99T + 37T^{2} \)
41 \( 1 + 7.74T + 41T^{2} \)
43 \( 1 - 5.05T + 43T^{2} \)
47 \( 1 - 9.90T + 47T^{2} \)
53 \( 1 - 4.63iT - 53T^{2} \)
59 \( 1 + 2.11T + 59T^{2} \)
61 \( 1 + 8.11iT - 61T^{2} \)
67 \( 1 - 8.80T + 67T^{2} \)
71 \( 1 + 2.57iT - 71T^{2} \)
73 \( 1 + 6.88iT - 73T^{2} \)
79 \( 1 - 7.01T + 79T^{2} \)
83 \( 1 + 5.21T + 83T^{2} \)
89 \( 1 - 8.17T + 89T^{2} \)
97 \( 1 + 13.5iT - 97T^{2} \)
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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

−9.073275325722485659680126670920, −8.266572659384043436649495395214, −7.69695341556660331269070093744, −7.02655957660536113723568168136, −6.02516755059277447818438463307, −4.75513103825298602240582735508, −3.92302307887008839746415421048, −3.29491900712710228201738191165, −2.13354728065075589341596798556, −0.63328058229575895244439884079, 1.68417107740999926222032339886, 2.55173181389408608839186003434, 3.53656423299114178950472865736, 4.47681334028520192454443901557, 5.30248834713268339026056946381, 6.76761889851034536360165233207, 7.00345924625538147673551529792, 8.192294833469220962358753230388, 8.857603123502445270584139673488, 9.174430150089547070580607083918

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