Properties

Label 2-20-20.7-c3-0-2
Degree $2$
Conductor $20$
Sign $0.742 - 0.669i$
Analytic cond. $1.18003$
Root an. cond. $1.08629$
Motivic weight $3$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + (2 + 2i)2-s + 8i·4-s + (−2 − 11i)5-s + (−16 + 16i)8-s − 27i·9-s + (18 − 26i)10-s + (−37 + 37i)13-s − 64·16-s + (99 + 99i)17-s + (54 − 54i)18-s + (88 − 16i)20-s + (−117 + 44i)25-s − 148·26-s − 284i·29-s + (−128 − 128i)32-s + ⋯
L(s)  = 1  + (0.707 + 0.707i)2-s + i·4-s + (−0.178 − 0.983i)5-s + (−0.707 + 0.707i)8-s i·9-s + (0.569 − 0.822i)10-s + (−0.789 + 0.789i)13-s − 16-s + (1.41 + 1.41i)17-s + (0.707 − 0.707i)18-s + (0.983 − 0.178i)20-s + (−0.936 + 0.351i)25-s − 1.11·26-s − 1.81i·29-s + (−0.707 − 0.707i)32-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 20 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.742 - 0.669i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 20 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (0.742 - 0.669i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(20\)    =    \(2^{2} \cdot 5\)
Sign: $0.742 - 0.669i$
Analytic conductor: \(1.18003\)
Root analytic conductor: \(1.08629\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{20} (7, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 20,\ (\ :3/2),\ 0.742 - 0.669i)\)

Particular Values

\(L(2)\) \(\approx\) \(1.31007 + 0.503184i\)
\(L(\frac12)\) \(\approx\) \(1.31007 + 0.503184i\)
\(L(\frac{5}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + (-2 - 2i)T \)
5 \( 1 + (2 + 11i)T \)
good3 \( 1 + 27iT^{2} \)
7 \( 1 - 343iT^{2} \)
11 \( 1 - 1.33e3T^{2} \)
13 \( 1 + (37 - 37i)T - 2.19e3iT^{2} \)
17 \( 1 + (-99 - 99i)T + 4.91e3iT^{2} \)
19 \( 1 + 6.85e3T^{2} \)
23 \( 1 + 1.21e4iT^{2} \)
29 \( 1 + 284iT - 2.43e4T^{2} \)
31 \( 1 - 2.97e4T^{2} \)
37 \( 1 + (91 + 91i)T + 5.06e4iT^{2} \)
41 \( 1 - 472T + 6.89e4T^{2} \)
43 \( 1 + 7.95e4iT^{2} \)
47 \( 1 - 1.03e5iT^{2} \)
53 \( 1 + (27 - 27i)T - 1.48e5iT^{2} \)
59 \( 1 + 2.05e5T^{2} \)
61 \( 1 + 468T + 2.26e5T^{2} \)
67 \( 1 - 3.00e5iT^{2} \)
71 \( 1 - 3.57e5T^{2} \)
73 \( 1 + (-253 + 253i)T - 3.89e5iT^{2} \)
79 \( 1 + 4.93e5T^{2} \)
83 \( 1 + 5.71e5iT^{2} \)
89 \( 1 - 176iT - 7.04e5T^{2} \)
97 \( 1 + (611 + 611i)T + 9.12e5iT^{2} \)
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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

−17.45546087292726170577777845224, −16.69752237222435590939438327202, −15.38727699628562890512432007082, −14.27626125064912458928709606258, −12.69500147627342730624120166724, −11.94950548885687097205042938930, −9.345497442084030485072288587476, −7.83807535551204722256362042230, −5.95265495077236844226719802653, −4.12937926458756835599315736874, 2.92881682390944771765176714559, 5.26244609920122227016028362377, 7.36530271200470390972058886539, 9.946969841461214799388836065548, 10.99742868321278542442602360451, 12.34280805707255941107442787719, 13.88166295641359620815192458007, 14.74714739455204021924409479449, 16.17593689634869811986342933635, 18.14684558954369962380112005112

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