Properties

Label 2-7-7.4-c9-0-2
Degree $2$
Conductor $7$
Sign $0.999 - 0.0280i$
Analytic cond. $3.60525$
Root an. cond. $1.89874$
Motivic weight $9$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (9.79 + 16.9i)2-s + (104. − 181. i)3-s + (63.9 − 110. i)4-s + (983. + 1.70e3i)5-s + 4.11e3·6-s + (−5.76e3 − 2.66e3i)7-s + 1.25e4·8-s + (−1.21e4 − 2.11e4i)9-s + (−1.92e4 + 3.33e4i)10-s + (−1.58e4 + 2.75e4i)11-s + (−1.34e4 − 2.32e4i)12-s − 1.00e5·13-s + (−1.13e4 − 1.23e5i)14-s + 4.13e5·15-s + (9.01e4 + 1.56e5i)16-s + (−1.69e5 + 2.92e5i)17-s + ⋯
L(s)  = 1  + (0.433 + 0.750i)2-s + (0.748 − 1.29i)3-s + (0.124 − 0.216i)4-s + (0.703 + 1.21i)5-s + 1.29·6-s + (−0.908 − 0.418i)7-s + 1.08·8-s + (−0.619 − 1.07i)9-s + (−0.609 + 1.05i)10-s + (−0.327 + 0.567i)11-s + (−0.187 − 0.323i)12-s − 0.972·13-s + (−0.0791 − 0.862i)14-s + 2.10·15-s + (0.343 + 0.595i)16-s + (−0.491 + 0.850i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.999 - 0.0280i)\, \overline{\Lambda}(10-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 7 ^{s/2} \, \Gamma_{\C}(s+9/2) \, L(s)\cr =\mathstrut & (0.999 - 0.0280i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(7\)
Sign: $0.999 - 0.0280i$
Analytic conductor: \(3.60525\)
Root analytic conductor: \(1.89874\)
Motivic weight: \(9\)
Rational: no
Arithmetic: yes
Character: $\chi_{7} (4, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 7,\ (\ :9/2),\ 0.999 - 0.0280i)\)

Particular Values

\(L(5)\) \(\approx\) \(2.26682 + 0.0318501i\)
\(L(\frac12)\) \(\approx\) \(2.26682 + 0.0318501i\)
\(L(\frac{11}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad7 \( 1 + (5.76e3 + 2.66e3i)T \)
good2 \( 1 + (-9.79 - 16.9i)T + (-256 + 443. i)T^{2} \)
3 \( 1 + (-104. + 181. i)T + (-9.84e3 - 1.70e4i)T^{2} \)
5 \( 1 + (-983. - 1.70e3i)T + (-9.76e5 + 1.69e6i)T^{2} \)
11 \( 1 + (1.58e4 - 2.75e4i)T + (-1.17e9 - 2.04e9i)T^{2} \)
13 \( 1 + 1.00e5T + 1.06e10T^{2} \)
17 \( 1 + (1.69e5 - 2.92e5i)T + (-5.92e10 - 1.02e11i)T^{2} \)
19 \( 1 + (1.30e5 + 2.26e5i)T + (-1.61e11 + 2.79e11i)T^{2} \)
23 \( 1 + (-2.72e5 - 4.71e5i)T + (-9.00e11 + 1.55e12i)T^{2} \)
29 \( 1 - 2.32e6T + 1.45e13T^{2} \)
31 \( 1 + (-2.53e6 + 4.39e6i)T + (-1.32e13 - 2.28e13i)T^{2} \)
37 \( 1 + (2.93e6 + 5.07e6i)T + (-6.49e13 + 1.12e14i)T^{2} \)
41 \( 1 + 2.81e7T + 3.27e14T^{2} \)
43 \( 1 - 3.88e7T + 5.02e14T^{2} \)
47 \( 1 + (1.26e7 + 2.19e7i)T + (-5.59e14 + 9.69e14i)T^{2} \)
53 \( 1 + (-2.26e7 + 3.92e7i)T + (-1.64e15 - 2.85e15i)T^{2} \)
59 \( 1 + (9.44e6 - 1.63e7i)T + (-4.33e15 - 7.50e15i)T^{2} \)
61 \( 1 + (5.08e7 + 8.80e7i)T + (-5.84e15 + 1.01e16i)T^{2} \)
67 \( 1 + (6.55e7 - 1.13e8i)T + (-1.36e16 - 2.35e16i)T^{2} \)
71 \( 1 - 9.51e7T + 4.58e16T^{2} \)
73 \( 1 + (1.19e8 - 2.06e8i)T + (-2.94e16 - 5.09e16i)T^{2} \)
79 \( 1 + (9.42e7 + 1.63e8i)T + (-5.99e16 + 1.03e17i)T^{2} \)
83 \( 1 + 1.76e8T + 1.86e17T^{2} \)
89 \( 1 + (-2.41e8 - 4.18e8i)T + (-1.75e17 + 3.03e17i)T^{2} \)
97 \( 1 + 2.28e7T + 7.60e17T^{2} \)
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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

−19.79794705052046195693179636307, −18.97494582938217957225889993626, −17.43207404657944917616647807534, −15.17349139297539854388547486858, −14.05863722979603759735263763744, −13.03985442963694668424679933821, −10.21585976865035642882221452280, −7.30600903137144338908787238906, −6.46103341581772464492173359665, −2.31640850783122798197191403210, 2.84092081527992741803542361822, 4.77405787646261198101472917143, 8.870447099971057783281853159394, 10.14214030117615246687642404925, 12.40115255293255044915839817728, 13.74801547607853015698033933295, 15.83700369985425614949608833490, 16.77980696676045805751893632960, 19.61299831093284778591446200969, 20.64810076760738362131648991702

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