Properties

Label 2-28-28.19-c5-0-9
Degree $2$
Conductor $28$
Sign $0.652 - 0.758i$
Analytic cond. $4.49074$
Root an. cond. $2.11913$
Motivic weight $5$
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 + 0.0122i)2-s + (11.9 + 20.6i)3-s + (31.9 + 0.138i)4-s + (−26.3 − 15.2i)5-s + (67.2 + 117. i)6-s + (−129. − 7.22i)7-s + (181. + 1.17i)8-s + (−163. + 283. i)9-s + (−148. − 86.4i)10-s + (633. − 365. i)11-s + (379. + 663. i)12-s − 555. i·13-s + (−732. − 42.4i)14-s − 726. i·15-s + (1.02e3 + 8.83i)16-s + (−1.12e3 + 647. i)17-s + ⋯
L(s)  = 1  + (0.999 + 0.00215i)2-s + (0.765 + 1.32i)3-s + (0.999 + 0.00431i)4-s + (−0.471 − 0.272i)5-s + (0.763 + 1.32i)6-s + (−0.998 − 0.0557i)7-s + (0.999 + 0.00647i)8-s + (−0.673 + 1.16i)9-s + (−0.470 − 0.273i)10-s + (1.57 − 0.911i)11-s + (0.760 + 1.33i)12-s − 0.911i·13-s + (−0.998 − 0.0578i)14-s − 0.834i·15-s + (0.999 + 0.00863i)16-s + (−0.940 + 0.543i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 28 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.652 - 0.758i)\, \overline{\Lambda}(6-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 28 ^{s/2} \, \Gamma_{\C}(s+5/2) \, L(s)\cr =\mathstrut & (0.652 - 0.758i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(28\)    =    \(2^{2} \cdot 7\)
Sign: $0.652 - 0.758i$
Analytic conductor: \(4.49074\)
Root analytic conductor: \(2.11913\)
Motivic weight: \(5\)
Rational: no
Arithmetic: yes
Character: $\chi_{28} (19, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 28,\ (\ :5/2),\ 0.652 - 0.758i)\)

Particular Values

\(L(3)\) \(\approx\) \(2.65114 + 1.21644i\)
\(L(\frac12)\) \(\approx\) \(2.65114 + 1.21644i\)
\(L(\frac{7}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-5.65 - 0.0122i)T \)
7 \( 1 + (129. + 7.22i)T \)
good3 \( 1 + (-11.9 - 20.6i)T + (-121.5 + 210. i)T^{2} \)
5 \( 1 + (26.3 + 15.2i)T + (1.56e3 + 2.70e3i)T^{2} \)
11 \( 1 + (-633. + 365. i)T + (8.05e4 - 1.39e5i)T^{2} \)
13 \( 1 + 555. iT - 3.71e5T^{2} \)
17 \( 1 + (1.12e3 - 647. i)T + (7.09e5 - 1.22e6i)T^{2} \)
19 \( 1 + (387. - 671. i)T + (-1.23e6 - 2.14e6i)T^{2} \)
23 \( 1 + (580. + 335. i)T + (3.21e6 + 5.57e6i)T^{2} \)
29 \( 1 + 3.19e3T + 2.05e7T^{2} \)
31 \( 1 + (156. + 270. i)T + (-1.43e7 + 2.47e7i)T^{2} \)
37 \( 1 + (2.55e3 - 4.42e3i)T + (-3.46e7 - 6.00e7i)T^{2} \)
41 \( 1 - 4.98e3iT - 1.15e8T^{2} \)
43 \( 1 - 1.27e4iT - 1.47e8T^{2} \)
47 \( 1 + (7.56e3 - 1.30e4i)T + (-1.14e8 - 1.98e8i)T^{2} \)
53 \( 1 + (1.52e4 + 2.63e4i)T + (-2.09e8 + 3.62e8i)T^{2} \)
59 \( 1 + (-1.85e4 - 3.21e4i)T + (-3.57e8 + 6.19e8i)T^{2} \)
61 \( 1 + (-444. - 256. i)T + (4.22e8 + 7.31e8i)T^{2} \)
67 \( 1 + (-2.77e4 + 1.59e4i)T + (6.75e8 - 1.16e9i)T^{2} \)
71 \( 1 + 3.97e3iT - 1.80e9T^{2} \)
73 \( 1 + (-1.45e4 + 8.37e3i)T + (1.03e9 - 1.79e9i)T^{2} \)
79 \( 1 + (-4.82e4 - 2.78e4i)T + (1.53e9 + 2.66e9i)T^{2} \)
83 \( 1 + 1.01e5T + 3.93e9T^{2} \)
89 \( 1 + (6.72e4 + 3.88e4i)T + (2.79e9 + 4.83e9i)T^{2} \)
97 \( 1 + 9.48e4iT - 8.58e9T^{2} \)
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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

−15.99865244224270121296387845782, −15.12382999524347650367962240017, −14.12073737111090241210156182292, −12.79774361717135814318815413613, −11.27153834500375116431290678017, −9.907322024375574374380048534369, −8.463601700365522340773257592229, −6.23231542929433718570806143484, −4.20613640040779328759439391841, −3.31774053365296784186618039729, 2.04118712677583641430310718836, 3.82093092759705637544247959057, 6.65695999598553749323688811406, 7.15184947826071727586949840289, 9.200249498373803566513008782698, 11.56584226920373854782597394460, 12.48040182972817466249200309725, 13.52583165971677081730491592652, 14.45453660573841025003118483323, 15.60298628066532194052297974660

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