Properties

Label 2-42-21.17-c3-0-1
Degree $2$
Conductor $42$
Sign $-0.148 - 0.988i$
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 + (2.82 + 4.36i)3-s + (1.99 − 3.46i)4-s + (2.24 + 3.88i)5-s + (−9.25 − 4.73i)6-s + (−9.71 + 15.7i)7-s + 7.99i·8-s + (−11.0 + 24.6i)9-s + (−7.77 − 4.49i)10-s + (20.2 + 11.7i)11-s + (20.7 − 1.04i)12-s − 5.91i·13-s + (1.05 − 37.0i)14-s + (−10.6 + 20.7i)15-s + (−8 − 13.8i)16-s + (58.0 − 100. i)17-s + ⋯
L(s)  = 1  + (−0.612 + 0.353i)2-s + (0.543 + 0.839i)3-s + (0.249 − 0.433i)4-s + (0.200 + 0.347i)5-s + (−0.629 − 0.322i)6-s + (−0.524 + 0.851i)7-s + 0.353i·8-s + (−0.410 + 0.912i)9-s + (−0.245 − 0.142i)10-s + (0.555 + 0.320i)11-s + (0.499 − 0.0252i)12-s − 0.126i·13-s + (0.0201 − 0.706i)14-s + (−0.183 + 0.357i)15-s + (−0.125 − 0.216i)16-s + (0.828 − 1.43i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.148 - 0.988i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (-0.148 - 0.988i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(42\)    =    \(2 \cdot 3 \cdot 7\)
Sign: $-0.148 - 0.988i$
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: \((2,\ 42,\ (\ :3/2),\ -0.148 - 0.988i)\)

Particular Values

\(L(2)\) \(\approx\) \(0.738699 + 0.857692i\)
\(L(\frac12)\) \(\approx\) \(0.738699 + 0.857692i\)
\(L(\frac{5}{2})\) 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 \( 1 + (-2.82 - 4.36i)T \)
7 \( 1 + (9.71 - 15.7i)T \)
good5 \( 1 + (-2.24 - 3.88i)T + (-62.5 + 108. i)T^{2} \)
11 \( 1 + (-20.2 - 11.7i)T + (665.5 + 1.15e3i)T^{2} \)
13 \( 1 + 5.91iT - 2.19e3T^{2} \)
17 \( 1 + (-58.0 + 100. i)T + (-2.45e3 - 4.25e3i)T^{2} \)
19 \( 1 + (-8.02 + 4.63i)T + (3.42e3 - 5.94e3i)T^{2} \)
23 \( 1 + (-107. + 62.1i)T + (6.08e3 - 1.05e4i)T^{2} \)
29 \( 1 - 207. iT - 2.43e4T^{2} \)
31 \( 1 + (-122. - 70.8i)T + (1.48e4 + 2.57e4i)T^{2} \)
37 \( 1 + (149. + 259. i)T + (-2.53e4 + 4.38e4i)T^{2} \)
41 \( 1 + 508.T + 6.89e4T^{2} \)
43 \( 1 - 391.T + 7.95e4T^{2} \)
47 \( 1 + (40.2 + 69.7i)T + (-5.19e4 + 8.99e4i)T^{2} \)
53 \( 1 + (-258. - 149. i)T + (7.44e4 + 1.28e5i)T^{2} \)
59 \( 1 + (-102. + 177. i)T + (-1.02e5 - 1.77e5i)T^{2} \)
61 \( 1 + (543. - 313. i)T + (1.13e5 - 1.96e5i)T^{2} \)
67 \( 1 + (-51.3 + 89.0i)T + (-1.50e5 - 2.60e5i)T^{2} \)
71 \( 1 - 46.9iT - 3.57e5T^{2} \)
73 \( 1 + (228. + 131. i)T + (1.94e5 + 3.36e5i)T^{2} \)
79 \( 1 + (-533. - 924. i)T + (-2.46e5 + 4.26e5i)T^{2} \)
83 \( 1 + 270.T + 5.71e5T^{2} \)
89 \( 1 + (-443. - 768. i)T + (-3.52e5 + 6.10e5i)T^{2} \)
97 \( 1 + 219. iT - 9.12e5T^{2} \)
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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

−15.88913300604632470656426320939, −14.87568367757269887191921869419, −13.99614214412162047344328218750, −12.15662791315647334146628145452, −10.61879230076114580300697668844, −9.525865785568021253436569562661, −8.694634070860015781760036032535, −6.96990952805599800968498455695, −5.22702618219366610770164725666, −2.88586236306103118510840540375, 1.23784660790389368779327579723, 3.49329648580107071537752523870, 6.39204332055216023316071157025, 7.71587853949401233833043539041, 8.934791279203136239396752783351, 10.14828171904260534420220637665, 11.71624433953989704752140757043, 12.91665516454284821754735993927, 13.73844187519680030961273535498, 15.15914935447740075822748510795

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