Properties

Label 2-7-7.4-c17-0-6
Degree $2$
Conductor $7$
Sign $0.752 + 0.658i$
Analytic cond. $12.8255$
Root an. cond. $3.58127$
Motivic weight $17$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (158. + 274. i)2-s + (−6.86e3 + 1.18e4i)3-s + (1.51e4 − 2.63e4i)4-s + (−4.70e5 − 8.14e5i)5-s − 4.35e6·6-s + (−5.83e6 − 1.40e7i)7-s + 5.12e7·8-s + (−2.95e7 − 5.12e7i)9-s + (1.49e8 − 2.58e8i)10-s + (−3.96e7 + 6.87e7i)11-s + (2.08e8 + 3.61e8i)12-s − 8.75e8·13-s + (2.94e9 − 3.83e9i)14-s + 1.29e10·15-s + (6.13e9 + 1.06e10i)16-s + (2.41e10 − 4.19e10i)17-s + ⋯
L(s)  = 1  + (0.438 + 0.758i)2-s + (−0.603 + 1.04i)3-s + (0.115 − 0.200i)4-s + (−0.538 − 0.932i)5-s − 1.05·6-s + (−0.382 − 0.924i)7-s + 1.07·8-s + (−0.229 − 0.396i)9-s + (0.471 − 0.816i)10-s + (−0.0558 + 0.0966i)11-s + (0.140 + 0.242i)12-s − 0.297·13-s + (0.533 − 0.695i)14-s + 1.29·15-s + (0.357 + 0.618i)16-s + (0.841 − 1.45i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.752 + 0.658i)\, \overline{\Lambda}(18-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s+17/2) \, L(s)\cr =\mathstrut & (0.752 + 0.658i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7\)
Sign: $0.752 + 0.658i$
Analytic conductor: \(12.8255\)
Root analytic conductor: \(3.58127\)
Motivic weight: \(17\)
Rational: no
Arithmetic: yes
Character: $\chi_{7} (4, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 7,\ (\ :17/2),\ 0.752 + 0.658i)\)

Particular Values

\(L(9)\) \(\approx\) \(1.21508 - 0.456144i\)
\(L(\frac12)\) \(\approx\) \(1.21508 - 0.456144i\)
\(L(\frac{19}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 + (5.83e6 + 1.40e7i)T \)
good2 \( 1 + (-158. - 274. i)T + (-6.55e4 + 1.13e5i)T^{2} \)
3 \( 1 + (6.86e3 - 1.18e4i)T + (-6.45e7 - 1.11e8i)T^{2} \)
5 \( 1 + (4.70e5 + 8.14e5i)T + (-3.81e11 + 6.60e11i)T^{2} \)
11 \( 1 + (3.96e7 - 6.87e7i)T + (-2.52e17 - 4.37e17i)T^{2} \)
13 \( 1 + 8.75e8T + 8.65e18T^{2} \)
17 \( 1 + (-2.41e10 + 4.19e10i)T + (-4.13e20 - 7.16e20i)T^{2} \)
19 \( 1 + (5.57e10 + 9.65e10i)T + (-2.74e21 + 4.74e21i)T^{2} \)
23 \( 1 + (-1.26e11 - 2.19e11i)T + (-7.05e22 + 1.22e23i)T^{2} \)
29 \( 1 + 4.23e12T + 7.25e24T^{2} \)
31 \( 1 + (-2.03e12 + 3.52e12i)T + (-1.12e25 - 1.95e25i)T^{2} \)
37 \( 1 + (-5.26e11 - 9.12e11i)T + (-2.28e26 + 3.95e26i)T^{2} \)
41 \( 1 - 3.11e13T + 2.61e27T^{2} \)
43 \( 1 + 3.21e13T + 5.87e27T^{2} \)
47 \( 1 + (5.21e13 + 9.02e13i)T + (-1.33e28 + 2.30e28i)T^{2} \)
53 \( 1 + (-3.55e14 + 6.15e14i)T + (-1.02e29 - 1.77e29i)T^{2} \)
59 \( 1 + (8.77e14 - 1.52e15i)T + (-6.35e29 - 1.10e30i)T^{2} \)
61 \( 1 + (2.12e14 + 3.67e14i)T + (-1.12e30 + 1.94e30i)T^{2} \)
67 \( 1 + (2.22e15 - 3.84e15i)T + (-5.52e30 - 9.56e30i)T^{2} \)
71 \( 1 - 1.95e15T + 2.96e31T^{2} \)
73 \( 1 + (1.00e15 - 1.73e15i)T + (-2.37e31 - 4.11e31i)T^{2} \)
79 \( 1 + (-1.31e16 - 2.28e16i)T + (-9.09e31 + 1.57e32i)T^{2} \)
83 \( 1 - 5.59e15T + 4.21e32T^{2} \)
89 \( 1 + (-2.59e15 - 4.49e15i)T + (-6.89e32 + 1.19e33i)T^{2} \)
97 \( 1 + 7.92e16T + 5.95e33T^{2} \)
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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

−16.87474161508514511162948122381, −16.29691718363527178275346390799, −15.18955808022977131206887628257, −13.36467050210928660171515498481, −11.23616721136512098192709953987, −9.741134431099720046613280502893, −7.30122671545342288973566675141, −5.24711480852505526120193772907, −4.28110256757916732676932881505, −0.51958843967465991595579253180, 1.83133226896544273098129167112, 3.43454905755801843249963872430, 6.19896539680432383247278884711, 7.72858557214948750529671218947, 10.72721461856274870865027771306, 12.09784532087400814329672312951, 12.76017020857304364966075096781, 14.85718515718491690040400331706, 16.85624045652916858852370569974, 18.64752583338742815029057861066

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