Properties

Label 2-42-21.2-c4-0-9
Degree $2$
Conductor $42$
Sign $-0.934 - 0.355i$
Analytic cond. $4.34153$
Root an. cond. $2.08363$
Motivic weight $4$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (−2.44 − 1.41i)2-s + (0.729 − 8.97i)3-s + (3.99 + 6.92i)4-s + (−30.1 − 17.4i)5-s + (−14.4 + 20.9i)6-s + (31.6 + 37.4i)7-s − 22.6i·8-s + (−79.9 − 13.0i)9-s + (49.2 + 85.3i)10-s + (−119. + 68.8i)11-s + (65.0 − 30.8i)12-s − 238.·13-s + (−24.5 − 136. i)14-s + (−178. + 258. i)15-s + (−32.0 + 55.4i)16-s + (198. − 114. i)17-s + ⋯
L(s)  = 1  + (−0.612 − 0.353i)2-s + (0.0810 − 0.996i)3-s + (0.249 + 0.433i)4-s + (−1.20 − 0.697i)5-s + (−0.402 + 0.581i)6-s + (0.645 + 0.763i)7-s − 0.353i·8-s + (−0.986 − 0.161i)9-s + (0.492 + 0.853i)10-s + (−0.985 + 0.569i)11-s + (0.451 − 0.214i)12-s − 1.41·13-s + (−0.125 − 0.695i)14-s + (−0.792 + 1.14i)15-s + (−0.125 + 0.216i)16-s + (0.685 − 0.396i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.934 - 0.355i)\, \overline{\Lambda}(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & (-0.934 - 0.355i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(42\)    =    \(2 \cdot 3 \cdot 7\)
Sign: $-0.934 - 0.355i$
Analytic conductor: \(4.34153\)
Root analytic conductor: \(2.08363\)
Motivic weight: \(4\)
Rational: no
Arithmetic: yes
Character: $\chi_{42} (23, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 42,\ (\ :2),\ -0.934 - 0.355i)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(0.0687998 + 0.374517i\)
\(L(\frac12)\) \(\approx\) \(0.0687998 + 0.374517i\)
\(L(3)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (2.44 + 1.41i)T \)
3 \( 1 + (-0.729 + 8.97i)T \)
7 \( 1 + (-31.6 - 37.4i)T \)
good5 \( 1 + (30.1 + 17.4i)T + (312.5 + 541. i)T^{2} \)
11 \( 1 + (119. - 68.8i)T + (7.32e3 - 1.26e4i)T^{2} \)
13 \( 1 + 238.T + 2.85e4T^{2} \)
17 \( 1 + (-198. + 114. i)T + (4.17e4 - 7.23e4i)T^{2} \)
19 \( 1 + (-258. + 448. i)T + (-6.51e4 - 1.12e5i)T^{2} \)
23 \( 1 + (187. + 108. i)T + (1.39e5 + 2.42e5i)T^{2} \)
29 \( 1 + 565. iT - 7.07e5T^{2} \)
31 \( 1 + (737. + 1.27e3i)T + (-4.61e5 + 7.99e5i)T^{2} \)
37 \( 1 + (-410. + 710. i)T + (-9.37e5 - 1.62e6i)T^{2} \)
41 \( 1 - 747. iT - 2.82e6T^{2} \)
43 \( 1 + 984.T + 3.41e6T^{2} \)
47 \( 1 + (254. + 146. i)T + (2.43e6 + 4.22e6i)T^{2} \)
53 \( 1 + (2.70e3 - 1.56e3i)T + (3.94e6 - 6.83e6i)T^{2} \)
59 \( 1 + (-3.25e3 + 1.87e3i)T + (6.05e6 - 1.04e7i)T^{2} \)
61 \( 1 + (-1.13e3 + 1.96e3i)T + (-6.92e6 - 1.19e7i)T^{2} \)
67 \( 1 + (1.37e3 + 2.38e3i)T + (-1.00e7 + 1.74e7i)T^{2} \)
71 \( 1 - 5.47e3iT - 2.54e7T^{2} \)
73 \( 1 + (-1.24e3 - 2.15e3i)T + (-1.41e7 + 2.45e7i)T^{2} \)
79 \( 1 + (-2.96e3 + 5.14e3i)T + (-1.94e7 - 3.37e7i)T^{2} \)
83 \( 1 + 3.54e3iT - 4.74e7T^{2} \)
89 \( 1 + (-7.54e3 - 4.35e3i)T + (3.13e7 + 5.43e7i)T^{2} \)
97 \( 1 - 5.48e3T + 8.85e7T^{2} \)
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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

−14.76122742805307884317010645425, −12.96151644158415164391247264372, −12.07966910918599380988142557281, −11.43853901459294766421217523853, −9.404439783411006923061452694493, −7.995201866861592264887229018213, −7.49825112353234431045657631542, −5.03830212479538276625827717169, −2.45471800991771623542290685951, −0.28738189062996641388264013086, 3.44439175109938820253440464072, 5.17152098365307538078048617565, 7.44543453531146282762761890417, 8.185638600557708470808135506762, 10.05705598537602063472418284218, 10.77159512766180842837278877596, 11.90596123369489522243507036442, 14.27598222431946619667498685428, 14.85450644292350229286759707646, 16.01332211224535730435152454635

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