Properties

Label 2-648-648.347-c1-0-71
Degree $2$
Conductor $648$
Sign $-0.421 + 0.906i$
Analytic cond. $5.17430$
Root an. cond. $2.27471$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (0.686 − 1.23i)2-s + (−1.64 − 0.537i)3-s + (−1.05 − 1.69i)4-s + (1.64 + 1.08i)5-s + (−1.79 + 1.66i)6-s + (3.20 − 3.02i)7-s + (−2.82 + 0.142i)8-s + (2.42 + 1.76i)9-s + (2.46 − 1.29i)10-s + (0.555 − 1.10i)11-s + (0.830 + 3.36i)12-s + (5.40 + 2.32i)13-s + (−1.53 − 6.03i)14-s + (−2.12 − 2.66i)15-s + (−1.76 + 3.59i)16-s + (−0.839 + 1.00i)17-s + ⋯
L(s)  = 1  + (0.485 − 0.874i)2-s + (−0.950 − 0.310i)3-s + (−0.528 − 0.848i)4-s + (0.736 + 0.484i)5-s + (−0.732 + 0.680i)6-s + (1.21 − 1.14i)7-s + (−0.998 + 0.0504i)8-s + (0.807 + 0.589i)9-s + (0.780 − 0.408i)10-s + (0.167 − 0.333i)11-s + (0.239 + 0.970i)12-s + (1.49 + 0.646i)13-s + (−0.411 − 1.61i)14-s + (−0.549 − 0.688i)15-s + (−0.440 + 0.897i)16-s + (−0.203 + 0.242i)17-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 648 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.421 + 0.906i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 648 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.421 + 0.906i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(648\)    =    \(2^{3} \cdot 3^{4}\)
Sign: $-0.421 + 0.906i$
Analytic conductor: \(5.17430\)
Root analytic conductor: \(2.27471\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{648} (347, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 648,\ (\ :1/2),\ -0.421 + 0.906i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.944789 - 1.48082i\)
\(L(\frac12)\) \(\approx\) \(0.944789 - 1.48082i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-0.686 + 1.23i)T \)
3 \( 1 + (1.64 + 0.537i)T \)
good5 \( 1 + (-1.64 - 1.08i)T + (1.98 + 4.59i)T^{2} \)
7 \( 1 + (-3.20 + 3.02i)T + (0.407 - 6.98i)T^{2} \)
11 \( 1 + (-0.555 + 1.10i)T + (-6.56 - 8.82i)T^{2} \)
13 \( 1 + (-5.40 - 2.32i)T + (8.92 + 9.45i)T^{2} \)
17 \( 1 + (0.839 - 1.00i)T + (-2.95 - 16.7i)T^{2} \)
19 \( 1 + (-0.869 + 0.729i)T + (3.29 - 18.7i)T^{2} \)
23 \( 1 + (-2.24 + 2.38i)T + (-1.33 - 22.9i)T^{2} \)
29 \( 1 + (9.66 + 1.12i)T + (28.2 + 6.68i)T^{2} \)
31 \( 1 + (-0.734 + 3.09i)T + (-27.7 - 13.9i)T^{2} \)
37 \( 1 + (4.78 + 0.843i)T + (34.7 + 12.6i)T^{2} \)
41 \( 1 + (-8.90 + 6.63i)T + (11.7 - 39.2i)T^{2} \)
43 \( 1 + (-0.456 - 7.82i)T + (-42.7 + 4.99i)T^{2} \)
47 \( 1 + (9.28 - 2.20i)T + (42.0 - 21.0i)T^{2} \)
53 \( 1 + (3.53 - 6.11i)T + (-26.5 - 45.8i)T^{2} \)
59 \( 1 + (-2.88 - 5.74i)T + (-35.2 + 47.3i)T^{2} \)
61 \( 1 + (-7.14 - 2.13i)T + (50.9 + 33.5i)T^{2} \)
67 \( 1 + (-6.40 + 0.748i)T + (65.1 - 15.4i)T^{2} \)
71 \( 1 + (-1.77 + 0.646i)T + (54.3 - 45.6i)T^{2} \)
73 \( 1 + (7.89 + 2.87i)T + (55.9 + 46.9i)T^{2} \)
79 \( 1 + (5.76 + 4.29i)T + (22.6 + 75.6i)T^{2} \)
83 \( 1 + (7.58 + 5.64i)T + (23.8 + 79.5i)T^{2} \)
89 \( 1 + (4.69 - 12.9i)T + (-68.1 - 57.2i)T^{2} \)
97 \( 1 + (-9.18 + 6.04i)T + (38.4 - 89.0i)T^{2} \)
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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

−10.74451947553635687733356100679, −9.839055828454065873018940016298, −8.702152945207710218920438026648, −7.44877078637712271856589499797, −6.37005592979472960620605693450, −5.73629075698388342897575344077, −4.58730363108688642072893774261, −3.82937418254794547887674462176, −1.99047919453574613464998753409, −1.08925313066468543115343805339, 1.62331148288848681920510898240, 3.59895958086704455392180859050, 4.87693287465153530944928507321, 5.48112239604662335221585187962, 5.92289694792713650408442418465, 7.09270836436932762075662713944, 8.260858509638953208109538758913, 8.965566119305541812001365996644, 9.757573865680990824477811646901, 11.23412629759110557096612057795

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