Properties

Label 2-42-21.17-c3-0-4
Degree $2$
Conductor $42$
Sign $-0.437 + 0.899i$
Analytic cond. $2.47808$
Root an. cond. $1.57419$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (−1.73 + i)2-s + (−4.17 + 3.09i)3-s + (1.99 − 3.46i)4-s + (−4.27 − 7.41i)5-s + (4.14 − 9.53i)6-s + (−6.41 − 17.3i)7-s + 7.99i·8-s + (7.89 − 25.8i)9-s + (14.8 + 8.55i)10-s + (−53.8 − 31.0i)11-s + (2.35 + 20.6i)12-s + 61.7i·13-s + (28.4 + 23.6i)14-s + (40.7 + 17.7i)15-s + (−8 − 13.8i)16-s + (13.3 − 23.0i)17-s + ⋯
L(s)  = 1  + (−0.612 + 0.353i)2-s + (−0.803 + 0.594i)3-s + (0.249 − 0.433i)4-s + (−0.382 − 0.662i)5-s + (0.281 − 0.648i)6-s + (−0.346 − 0.938i)7-s + 0.353i·8-s + (0.292 − 0.956i)9-s + (0.468 + 0.270i)10-s + (−1.47 − 0.852i)11-s + (0.0565 + 0.496i)12-s + 1.31i·13-s + (0.543 + 0.451i)14-s + (0.701 + 0.305i)15-s + (−0.125 − 0.216i)16-s + (0.190 − 0.329i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.437 + 0.899i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (-0.437 + 0.899i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(42\)    =    \(2 \cdot 3 \cdot 7\)
Sign: $-0.437 + 0.899i$
Analytic conductor: \(2.47808\)
Root analytic conductor: \(1.57419\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{42} (17, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 42,\ (\ :3/2),\ -0.437 + 0.899i)\)

Particular Values

\(L(2)\) \(\approx\) \(0.143466 - 0.229439i\)
\(L(\frac12)\) \(\approx\) \(0.143466 - 0.229439i\)
\(L(\frac{5}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (1.73 - i)T \)
3 \( 1 + (4.17 - 3.09i)T \)
7 \( 1 + (6.41 + 17.3i)T \)
good5 \( 1 + (4.27 + 7.41i)T + (-62.5 + 108. i)T^{2} \)
11 \( 1 + (53.8 + 31.0i)T + (665.5 + 1.15e3i)T^{2} \)
13 \( 1 - 61.7iT - 2.19e3T^{2} \)
17 \( 1 + (-13.3 + 23.0i)T + (-2.45e3 - 4.25e3i)T^{2} \)
19 \( 1 + (58.6 - 33.8i)T + (3.42e3 - 5.94e3i)T^{2} \)
23 \( 1 + (45.8 - 26.4i)T + (6.08e3 - 1.05e4i)T^{2} \)
29 \( 1 + 55.1iT - 2.43e4T^{2} \)
31 \( 1 + (134. + 77.4i)T + (1.48e4 + 2.57e4i)T^{2} \)
37 \( 1 + (157. + 273. i)T + (-2.53e4 + 4.38e4i)T^{2} \)
41 \( 1 - 210.T + 6.89e4T^{2} \)
43 \( 1 - 351.T + 7.95e4T^{2} \)
47 \( 1 + (-115. - 200. i)T + (-5.19e4 + 8.99e4i)T^{2} \)
53 \( 1 + (-232. - 134. i)T + (7.44e4 + 1.28e5i)T^{2} \)
59 \( 1 + (-9.14 + 15.8i)T + (-1.02e5 - 1.77e5i)T^{2} \)
61 \( 1 + (72.3 - 41.7i)T + (1.13e5 - 1.96e5i)T^{2} \)
67 \( 1 + (64.7 - 112. i)T + (-1.50e5 - 2.60e5i)T^{2} \)
71 \( 1 + 804. iT - 3.57e5T^{2} \)
73 \( 1 + (-370. - 213. i)T + (1.94e5 + 3.36e5i)T^{2} \)
79 \( 1 + (609. + 1.05e3i)T + (-2.46e5 + 4.26e5i)T^{2} \)
83 \( 1 + 1.37e3T + 5.71e5T^{2} \)
89 \( 1 + (386. + 670. i)T + (-3.52e5 + 6.10e5i)T^{2} \)
97 \( 1 + 848. iT - 9.12e5T^{2} \)
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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

−15.85589822027428514693837949345, −14.13551625778436389183945278631, −12.66049936898668967646713124962, −11.21335762921504670409582259321, −10.31440841251495776586887841955, −9.003941420664072757730604550869, −7.47877831339954383621927553114, −5.88152120473588487766555649746, −4.28256869631074807568177319796, −0.28038133432348573849515631207, 2.58873764215124798777500597205, 5.47196291967181265122752230585, 7.09185261419439840659339362748, 8.220344551994546573576270942905, 10.19492343611679360655162139043, 10.97023405673379165755044096152, 12.40092457713519809602630188608, 12.94602446582281319872810523253, 15.14143744650377864297092181054, 15.90280181791300280533735760474

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