Properties

Label 2-28-7.4-c11-0-6
Degree $2$
Conductor $28$
Sign $-0.970 - 0.240i$
Analytic cond. $21.5136$
Root an. cond. $4.63827$
Motivic weight $11$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (410. − 711. i)3-s + (456. + 790. i)5-s + (−4.18e4 + 1.50e4i)7-s + (−2.48e5 − 4.30e5i)9-s + (5.68e4 − 9.84e4i)11-s − 1.60e6·13-s + 7.49e5·15-s + (4.03e5 − 6.98e5i)17-s + (7.33e6 + 1.27e7i)19-s + (−6.50e6 + 3.59e7i)21-s + (−2.21e7 − 3.83e7i)23-s + (2.39e7 − 4.15e7i)25-s − 2.62e8·27-s − 5.24e7·29-s + (−6.88e7 + 1.19e8i)31-s + ⋯
L(s)  = 1  + (0.975 − 1.68i)3-s + (0.0652 + 0.113i)5-s + (−0.941 + 0.337i)7-s + (−1.40 − 2.43i)9-s + (0.106 − 0.184i)11-s − 1.19·13-s + 0.254·15-s + (0.0689 − 0.119i)17-s + (0.679 + 1.17i)19-s + (−0.347 + 1.92i)21-s + (−0.717 − 1.24i)23-s + (0.491 − 0.851i)25-s − 3.52·27-s − 0.475·29-s + (−0.431 + 0.748i)31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 28 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.970 - 0.240i)\, \overline{\Lambda}(12-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 28 ^{s/2} \, \Gamma_{\C}(s+11/2) \, L(s)\cr =\mathstrut & (-0.970 - 0.240i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(28\)    =    \(2^{2} \cdot 7\)
Sign: $-0.970 - 0.240i$
Analytic conductor: \(21.5136\)
Root analytic conductor: \(4.63827\)
Motivic weight: \(11\)
Rational: no
Arithmetic: yes
Character: $\chi_{28} (25, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 28,\ (\ :11/2),\ -0.970 - 0.240i)\)

Particular Values

\(L(6)\) \(\approx\) \(0.156034 + 1.28083i\)
\(L(\frac12)\) \(\approx\) \(0.156034 + 1.28083i\)
\(L(\frac{13}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
7 \( 1 + (4.18e4 - 1.50e4i)T \)
good3 \( 1 + (-410. + 711. i)T + (-8.85e4 - 1.53e5i)T^{2} \)
5 \( 1 + (-456. - 790. i)T + (-2.44e7 + 4.22e7i)T^{2} \)
11 \( 1 + (-5.68e4 + 9.84e4i)T + (-1.42e11 - 2.47e11i)T^{2} \)
13 \( 1 + 1.60e6T + 1.79e12T^{2} \)
17 \( 1 + (-4.03e5 + 6.98e5i)T + (-1.71e13 - 2.96e13i)T^{2} \)
19 \( 1 + (-7.33e6 - 1.27e7i)T + (-5.82e13 + 1.00e14i)T^{2} \)
23 \( 1 + (2.21e7 + 3.83e7i)T + (-4.76e14 + 8.25e14i)T^{2} \)
29 \( 1 + 5.24e7T + 1.22e16T^{2} \)
31 \( 1 + (6.88e7 - 1.19e8i)T + (-1.27e16 - 2.20e16i)T^{2} \)
37 \( 1 + (-4.31e7 - 7.48e7i)T + (-8.89e16 + 1.54e17i)T^{2} \)
41 \( 1 - 8.15e8T + 5.50e17T^{2} \)
43 \( 1 + 1.31e8T + 9.29e17T^{2} \)
47 \( 1 + (1.44e9 + 2.49e9i)T + (-1.23e18 + 2.14e18i)T^{2} \)
53 \( 1 + (1.70e9 - 2.95e9i)T + (-4.63e18 - 8.02e18i)T^{2} \)
59 \( 1 + (-2.91e9 + 5.04e9i)T + (-1.50e19 - 2.61e19i)T^{2} \)
61 \( 1 + (2.01e8 + 3.49e8i)T + (-2.17e19 + 3.76e19i)T^{2} \)
67 \( 1 + (5.18e8 - 8.98e8i)T + (-6.10e19 - 1.05e20i)T^{2} \)
71 \( 1 - 1.07e10T + 2.31e20T^{2} \)
73 \( 1 + (-1.04e10 + 1.80e10i)T + (-1.56e20 - 2.71e20i)T^{2} \)
79 \( 1 + (1.94e10 + 3.37e10i)T + (-3.73e20 + 6.47e20i)T^{2} \)
83 \( 1 - 3.42e10T + 1.28e21T^{2} \)
89 \( 1 + (3.37e10 + 5.83e10i)T + (-1.38e21 + 2.40e21i)T^{2} \)
97 \( 1 + 7.18e10T + 7.15e21T^{2} \)
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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

−13.97807253017264959252116533095, −12.65001730861556571726544029784, −12.14076427075964573142655943616, −9.739952595301721005495360165212, −8.428708834592030129388360683277, −7.21592366292038543184300861817, −6.13155640605559221696832989988, −3.20057267362891665967134621883, −2.07549257676684420254683039013, −0.37182510236817209686197441861, 2.68331895555402037699931674557, 3.86773608933873252768033637031, 5.21407237448358239253286661731, 7.58035941977276708464989607792, 9.383309196749757882745406011446, 9.696948872729818994043131567291, 11.15115656895917587165587298764, 13.16995777262487158769347769270, 14.35186587108501004349929738339, 15.36900809921201538847017934655

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