Properties

Label 2-42-7.3-c8-0-5
Degree $2$
Conductor $42$
Sign $0.780 - 0.625i$
Analytic cond. $17.1099$
Root an. cond. $4.13641$
Motivic weight $8$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (5.65 + 9.79i)2-s + (−40.5 − 23.3i)3-s + (−63.9 + 110. i)4-s + (−127. + 73.6i)5-s − 529. i·6-s + (1.14e3 − 2.10e3i)7-s − 1.44e3·8-s + (1.09e3 + 1.89e3i)9-s + (−1.44e3 − 833. i)10-s + (6.28e3 − 1.08e4i)11-s + (5.18e3 − 2.99e3i)12-s + 4.58e4i·13-s + (2.71e4 − 679. i)14-s + 6.88e3·15-s + (−8.19e3 − 1.41e4i)16-s + (6.39e4 + 3.69e4i)17-s + ⋯
L(s)  = 1  + (0.353 + 0.612i)2-s + (−0.5 − 0.288i)3-s + (−0.249 + 0.433i)4-s + (−0.204 + 0.117i)5-s − 0.408i·6-s + (0.478 − 0.878i)7-s − 0.353·8-s + (0.166 + 0.288i)9-s + (−0.144 − 0.0833i)10-s + (0.429 − 0.744i)11-s + (0.249 − 0.144i)12-s + 1.60i·13-s + (0.706 − 0.0176i)14-s + 0.136·15-s + (−0.125 − 0.216i)16-s + (0.766 + 0.442i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.780 - 0.625i)\, \overline{\Lambda}(9-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s+4) \, L(s)\cr =\mathstrut & (0.780 - 0.625i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(42\)    =    \(2 \cdot 3 \cdot 7\)
Sign: $0.780 - 0.625i$
Analytic conductor: \(17.1099\)
Root analytic conductor: \(4.13641\)
Motivic weight: \(8\)
Rational: no
Arithmetic: yes
Character: $\chi_{42} (31, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 42,\ (\ :4),\ 0.780 - 0.625i)\)

Particular Values

\(L(\frac{9}{2})\) \(\approx\) \(1.84039 + 0.646212i\)
\(L(\frac12)\) \(\approx\) \(1.84039 + 0.646212i\)
\(L(5)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-5.65 - 9.79i)T \)
3 \( 1 + (40.5 + 23.3i)T \)
7 \( 1 + (-1.14e3 + 2.10e3i)T \)
good5 \( 1 + (127. - 73.6i)T + (1.95e5 - 3.38e5i)T^{2} \)
11 \( 1 + (-6.28e3 + 1.08e4i)T + (-1.07e8 - 1.85e8i)T^{2} \)
13 \( 1 - 4.58e4iT - 8.15e8T^{2} \)
17 \( 1 + (-6.39e4 - 3.69e4i)T + (3.48e9 + 6.04e9i)T^{2} \)
19 \( 1 + (-2.18e5 + 1.26e5i)T + (8.49e9 - 1.47e10i)T^{2} \)
23 \( 1 + (-1.62e5 - 2.81e5i)T + (-3.91e10 + 6.78e10i)T^{2} \)
29 \( 1 - 1.07e6T + 5.00e11T^{2} \)
31 \( 1 + (5.80e5 + 3.35e5i)T + (4.26e11 + 7.38e11i)T^{2} \)
37 \( 1 + (-7.92e5 - 1.37e6i)T + (-1.75e12 + 3.04e12i)T^{2} \)
41 \( 1 + 4.20e6iT - 7.98e12T^{2} \)
43 \( 1 - 1.44e6T + 1.16e13T^{2} \)
47 \( 1 + (-3.10e6 + 1.79e6i)T + (1.19e13 - 2.06e13i)T^{2} \)
53 \( 1 + (-1.26e6 + 2.19e6i)T + (-3.11e13 - 5.39e13i)T^{2} \)
59 \( 1 + (2.04e7 + 1.18e7i)T + (7.34e13 + 1.27e14i)T^{2} \)
61 \( 1 + (2.48e6 - 1.43e6i)T + (9.58e13 - 1.66e14i)T^{2} \)
67 \( 1 + (9.23e5 - 1.59e6i)T + (-2.03e14 - 3.51e14i)T^{2} \)
71 \( 1 - 2.54e7T + 6.45e14T^{2} \)
73 \( 1 + (-1.76e7 - 1.02e7i)T + (4.03e14 + 6.98e14i)T^{2} \)
79 \( 1 + (-3.52e7 - 6.11e7i)T + (-7.58e14 + 1.31e15i)T^{2} \)
83 \( 1 + 1.20e7iT - 2.25e15T^{2} \)
89 \( 1 + (-2.83e7 + 1.63e7i)T + (1.96e15 - 3.40e15i)T^{2} \)
97 \( 1 - 8.92e7iT - 7.83e15T^{2} \)
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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

−14.10340541437475609793544848223, −13.63824326897543925707605732534, −11.91488344237529653438860283057, −11.14150371377149413476649690711, −9.322290910166045823253789685318, −7.66689718013875155486388105268, −6.73450292587883615742714958796, −5.19340105298656708228585635238, −3.72160319773981924198411110799, −1.09481274799132590758961875956, 0.999415734074814642250205141015, 2.97754206484919435575482504436, 4.76784747070411731985092899088, 5.82433398738662051221616277719, 7.901155846171855309472817292358, 9.530590917732401864093688745468, 10.61518114512134049610694975692, 12.04358628191799474439919737890, 12.41689450641159501925534290092, 14.21095015557594510876860832466

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