Properties

Label 2-1680-7.6-c2-0-4
Degree $2$
Conductor $1680$
Sign $-0.476 - 0.879i$
Analytic cond. $45.7766$
Root an. cond. $6.76584$
Motivic weight $2$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 1.73i·3-s − 2.23i·5-s + (3.33 + 6.15i)7-s − 2.99·9-s − 17.0·11-s − 16.3i·13-s − 3.87·15-s − 13.4i·17-s + 13.7i·19-s + (10.6 − 5.77i)21-s + 16.6·23-s − 5.00·25-s + 5.19i·27-s + 32.1·29-s − 6.74i·31-s + ⋯
L(s)  = 1  − 0.577i·3-s − 0.447i·5-s + (0.476 + 0.879i)7-s − 0.333·9-s − 1.54·11-s − 1.25i·13-s − 0.258·15-s − 0.789i·17-s + 0.723i·19-s + (0.507 − 0.274i)21-s + 0.722·23-s − 0.200·25-s + 0.192i·27-s + 1.10·29-s − 0.217i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.476 - 0.879i)\, \overline{\Lambda}(3-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1) \, L(s)\cr =\mathstrut & (-0.476 - 0.879i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-0.476 - 0.879i$
Analytic conductor: \(45.7766\)
Root analytic conductor: \(6.76584\)
Motivic weight: \(2\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (1441, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1),\ -0.476 - 0.879i)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(0.3103220492\)
\(L(\frac12)\) \(\approx\) \(0.3103220492\)
\(L(2)\) 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 \( 1 + 1.73iT \)
5 \( 1 + 2.23iT \)
7 \( 1 + (-3.33 - 6.15i)T \)
good11 \( 1 + 17.0T + 121T^{2} \)
13 \( 1 + 16.3iT - 169T^{2} \)
17 \( 1 + 13.4iT - 289T^{2} \)
19 \( 1 - 13.7iT - 361T^{2} \)
23 \( 1 - 16.6T + 529T^{2} \)
29 \( 1 - 32.1T + 841T^{2} \)
31 \( 1 + 6.74iT - 961T^{2} \)
37 \( 1 + 69.2T + 1.36e3T^{2} \)
41 \( 1 - 39.7iT - 1.68e3T^{2} \)
43 \( 1 + 43.2T + 1.84e3T^{2} \)
47 \( 1 - 40.1iT - 2.20e3T^{2} \)
53 \( 1 - 22.5T + 2.80e3T^{2} \)
59 \( 1 - 81.6iT - 3.48e3T^{2} \)
61 \( 1 + 14.9iT - 3.72e3T^{2} \)
67 \( 1 + 72.0T + 4.48e3T^{2} \)
71 \( 1 - 25.7T + 5.04e3T^{2} \)
73 \( 1 + 75.0iT - 5.32e3T^{2} \)
79 \( 1 + 80.0T + 6.24e3T^{2} \)
83 \( 1 + 102. iT - 6.88e3T^{2} \)
89 \( 1 - 128. iT - 7.92e3T^{2} \)
97 \( 1 - 159. iT - 9.40e3T^{2} \)
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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

−9.292183603634946938628207436893, −8.345947569465254224770415342582, −8.045203256533589358842557903790, −7.21431097693000995404239962019, −6.04132210679192730744093161692, −5.28304988126294011147850075968, −4.86715112961529201259137052486, −3.13938724544443172830577408647, −2.50632634557836163893536624868, −1.24003720617806453485219885436, 0.082407087811333369522027848974, 1.76938824931931962026104543804, 2.91183535958073166828565078662, 3.89509090141257515464790653267, 4.76380166280726332984121437924, 5.40526568191328107960306629834, 6.73743191072829232693995061188, 7.16547214790321890075644975573, 8.255865172229951665946466916609, 8.782997569376913479236127235937

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