Properties

Label 2-42-21.5-c3-0-6
Degree $2$
Conductor $42$
Sign $0.913 + 0.406i$
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 + (−0.0354 − 5.19i)3-s + (1.99 + 3.46i)4-s + (5.27 − 9.13i)5-s + (5.13 − 9.03i)6-s + (17.7 + 5.44i)7-s + 7.99i·8-s + (−26.9 + 0.368i)9-s + (18.2 − 10.5i)10-s + (−26.6 + 15.4i)11-s + (17.9 − 10.5i)12-s + 19.8i·13-s + (25.2 + 27.1i)14-s + (−47.6 − 27.0i)15-s + (−8 + 13.8i)16-s + (46.3 + 80.2i)17-s + ⋯
L(s)  = 1  + (0.612 + 0.353i)2-s + (−0.00682 − 0.999i)3-s + (0.249 + 0.433i)4-s + (0.471 − 0.816i)5-s + (0.349 − 0.614i)6-s + (0.955 + 0.293i)7-s + 0.353i·8-s + (−0.999 + 0.0136i)9-s + (0.577 − 0.333i)10-s + (−0.731 + 0.422i)11-s + (0.431 − 0.252i)12-s + 0.423i·13-s + (0.481 + 0.517i)14-s + (−0.820 − 0.466i)15-s + (−0.125 + 0.216i)16-s + (0.661 + 1.14i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.913 + 0.406i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 42 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (0.913 + 0.406i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(42\)    =    \(2 \cdot 3 \cdot 7\)
Sign: $0.913 + 0.406i$
Analytic conductor: \(2.47808\)
Root analytic conductor: \(1.57419\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{42} (5, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 42,\ (\ :3/2),\ 0.913 + 0.406i)\)

Particular Values

\(L(2)\) \(\approx\) \(1.83824 - 0.390010i\)
\(L(\frac12)\) \(\approx\) \(1.83824 - 0.390010i\)
\(L(\frac{5}{2})\) 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 \( 1 + (0.0354 + 5.19i)T \)
7 \( 1 + (-17.7 - 5.44i)T \)
good5 \( 1 + (-5.27 + 9.13i)T + (-62.5 - 108. i)T^{2} \)
11 \( 1 + (26.6 - 15.4i)T + (665.5 - 1.15e3i)T^{2} \)
13 \( 1 - 19.8iT - 2.19e3T^{2} \)
17 \( 1 + (-46.3 - 80.2i)T + (-2.45e3 + 4.25e3i)T^{2} \)
19 \( 1 + (118. + 68.6i)T + (3.42e3 + 5.94e3i)T^{2} \)
23 \( 1 + (37.6 + 21.7i)T + (6.08e3 + 1.05e4i)T^{2} \)
29 \( 1 - 134. iT - 2.43e4T^{2} \)
31 \( 1 + (-144. + 83.6i)T + (1.48e4 - 2.57e4i)T^{2} \)
37 \( 1 + (-191. + 332. i)T + (-2.53e4 - 4.38e4i)T^{2} \)
41 \( 1 - 107.T + 6.89e4T^{2} \)
43 \( 1 + 285.T + 7.95e4T^{2} \)
47 \( 1 + (-120. + 209. i)T + (-5.19e4 - 8.99e4i)T^{2} \)
53 \( 1 + (432. - 249. i)T + (7.44e4 - 1.28e5i)T^{2} \)
59 \( 1 + (366. + 634. i)T + (-1.02e5 + 1.77e5i)T^{2} \)
61 \( 1 + (265. + 153. i)T + (1.13e5 + 1.96e5i)T^{2} \)
67 \( 1 + (280. + 485. i)T + (-1.50e5 + 2.60e5i)T^{2} \)
71 \( 1 + 74.2iT - 3.57e5T^{2} \)
73 \( 1 + (-141. + 81.6i)T + (1.94e5 - 3.36e5i)T^{2} \)
79 \( 1 + (437. - 757. i)T + (-2.46e5 - 4.26e5i)T^{2} \)
83 \( 1 - 406.T + 5.71e5T^{2} \)
89 \( 1 + (-526. + 911. i)T + (-3.52e5 - 6.10e5i)T^{2} \)
97 \( 1 + 243. iT - 9.12e5T^{2} \)
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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

−15.17648648750828974949120482401, −14.19391316418750012360440753891, −12.98338206675768412827077668516, −12.41263086843918423103579029072, −10.98130167807522599160692358401, −8.773425784753945180249404878314, −7.76513320769949970736769531667, −6.13340063726342170686393907331, −4.84572969788875609201450017213, −1.98082379158613252076274990060, 2.84514711539733920434908448416, 4.62591274589536145332909234827, 5.99815392401085525427614582709, 8.095798063112557242878682081070, 10.03222103489159942820992607459, 10.69412920404838841349077719668, 11.78324073989004960734408478777, 13.62236499858669266435999108889, 14.45560024910314555488299720255, 15.27474698719951094699315171548

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