Properties

Label 2-1680-140.139-c1-0-40
Degree $2$
Conductor $1680$
Sign $-0.716 + 0.697i$
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  + i·3-s + (−0.890 − 2.05i)5-s + (0.425 − 2.61i)7-s − 9-s − 2.24i·11-s + 2.86·13-s + (2.05 − 0.890i)15-s − 0.466·17-s − 4.40·19-s + (2.61 + 0.425i)21-s + 2.22·23-s + (−3.41 + 3.65i)25-s i·27-s + 0.668·29-s − 9.53·31-s + ⋯
L(s)  = 1  + 0.577i·3-s + (−0.398 − 0.917i)5-s + (0.160 − 0.986i)7-s − 0.333·9-s − 0.677i·11-s + 0.795·13-s + (0.529 − 0.229i)15-s − 0.113·17-s − 1.01·19-s + (0.569 + 0.0928i)21-s + 0.463·23-s + (−0.683 + 0.730i)25-s − 0.192i·27-s + 0.124·29-s − 1.71·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.716 + 0.697i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.716 + 0.697i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-0.716 + 0.697i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (559, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ -0.716 + 0.697i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.8748728350\)
\(L(\frac12)\) \(\approx\) \(0.8748728350\)
\(L(\frac{3}{2})\) 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 \( 1 - iT \)
5 \( 1 + (0.890 + 2.05i)T \)
7 \( 1 + (-0.425 + 2.61i)T \)
good11 \( 1 + 2.24iT - 11T^{2} \)
13 \( 1 - 2.86T + 13T^{2} \)
17 \( 1 + 0.466T + 17T^{2} \)
19 \( 1 + 4.40T + 19T^{2} \)
23 \( 1 - 2.22T + 23T^{2} \)
29 \( 1 - 0.668T + 29T^{2} \)
31 \( 1 + 9.53T + 31T^{2} \)
37 \( 1 - 6.08iT - 37T^{2} \)
41 \( 1 + 7.46iT - 41T^{2} \)
43 \( 1 + 3.53T + 43T^{2} \)
47 \( 1 + 8.72iT - 47T^{2} \)
53 \( 1 - 3.45iT - 53T^{2} \)
59 \( 1 + 8.26T + 59T^{2} \)
61 \( 1 + 7.17iT - 61T^{2} \)
67 \( 1 + 13.4T + 67T^{2} \)
71 \( 1 - 0.252iT - 71T^{2} \)
73 \( 1 - 14.5T + 73T^{2} \)
79 \( 1 - 9.20iT - 79T^{2} \)
83 \( 1 - 83T^{2} \)
89 \( 1 + 13.9iT - 89T^{2} \)
97 \( 1 + 6.17T + 97T^{2} \)
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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

−8.871116507301861933652479469052, −8.480982147186117991670174867864, −7.60936819662007417799716010078, −6.64139981541269914431843725450, −5.64081638370203770432076992966, −4.80129237532997785531597699434, −3.98932581906027600391985524572, −3.38637004803209578316801245796, −1.62669154231340719415428762449, −0.32662255883971909958847960560, 1.73271312078997106673933247848, 2.61168815744085281808072658666, 3.60204585639079047291946194120, 4.70740290930084426361510119710, 5.86543265117047828428781547182, 6.43117610490203356374933329458, 7.27731743975266485514402255235, 7.983633619601666419826308106940, 8.801184189602787399531285288649, 9.497249287694423038252631989833

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