Properties

Label 2-20e2-5.4-c3-0-8
Degree $2$
Conductor $400$
Sign $0.447 - 0.894i$
Analytic cond. $23.6007$
Root an. cond. $4.85806$
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  + 2i·3-s − 6i·7-s + 23·9-s − 32·11-s + 38i·13-s + 26i·17-s + 100·19-s + 12·21-s − 78i·23-s + 100i·27-s + 50·29-s + 108·31-s − 64i·33-s + 266i·37-s − 76·39-s + ⋯
L(s)  = 1  + 0.384i·3-s − 0.323i·7-s + 0.851·9-s − 0.877·11-s + 0.810i·13-s + 0.370i·17-s + 1.20·19-s + 0.124·21-s − 0.707i·23-s + 0.712i·27-s + 0.320·29-s + 0.625·31-s − 0.337i·33-s + 1.18i·37-s − 0.312·39-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.447 - 0.894i)\, \overline{\Lambda}(4-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 400 ^{s/2} \, \Gamma_{\C}(s+3/2) \, L(s)\cr =\mathstrut & (0.447 - 0.894i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(400\)    =    \(2^{4} \cdot 5^{2}\)
Sign: $0.447 - 0.894i$
Analytic conductor: \(23.6007\)
Root analytic conductor: \(4.85806\)
Motivic weight: \(3\)
Rational: no
Arithmetic: yes
Character: $\chi_{400} (49, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 400,\ (\ :3/2),\ 0.447 - 0.894i)\)

Particular Values

\(L(2)\) \(\approx\) \(1.841899855\)
\(L(\frac12)\) \(\approx\) \(1.841899855\)
\(L(\frac{5}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
5 \( 1 \)
good3 \( 1 - 2iT - 27T^{2} \)
7 \( 1 + 6iT - 343T^{2} \)
11 \( 1 + 32T + 1.33e3T^{2} \)
13 \( 1 - 38iT - 2.19e3T^{2} \)
17 \( 1 - 26iT - 4.91e3T^{2} \)
19 \( 1 - 100T + 6.85e3T^{2} \)
23 \( 1 + 78iT - 1.21e4T^{2} \)
29 \( 1 - 50T + 2.43e4T^{2} \)
31 \( 1 - 108T + 2.97e4T^{2} \)
37 \( 1 - 266iT - 5.06e4T^{2} \)
41 \( 1 - 22T + 6.89e4T^{2} \)
43 \( 1 - 442iT - 7.95e4T^{2} \)
47 \( 1 - 514iT - 1.03e5T^{2} \)
53 \( 1 + 2iT - 1.48e5T^{2} \)
59 \( 1 - 500T + 2.05e5T^{2} \)
61 \( 1 + 518T + 2.26e5T^{2} \)
67 \( 1 + 126iT - 3.00e5T^{2} \)
71 \( 1 + 412T + 3.57e5T^{2} \)
73 \( 1 - 878iT - 3.89e5T^{2} \)
79 \( 1 - 600T + 4.93e5T^{2} \)
83 \( 1 - 282iT - 5.71e5T^{2} \)
89 \( 1 - 150T + 7.04e5T^{2} \)
97 \( 1 - 386iT - 9.12e5T^{2} \)
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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

−10.86475004937360218547711231027, −10.08554000731444361154593768878, −9.403824827627716724822132422354, −8.188848125144498443810314292992, −7.31379971720802691878323149035, −6.31702851948624255243191570083, −4.97318672059577961980651840765, −4.19590710006785558926753365408, −2.84817102981007986351160784742, −1.23295451945082391674409910234, 0.71160351408492586945971911327, 2.23618783113428555914189139512, 3.50158159467581486014116015405, 4.98085989018928893461698109074, 5.79271527161043583096136312479, 7.17941231620303986546456277637, 7.69416537364798965174973992097, 8.824612195946698976107674073743, 9.917023165950861455861547693748, 10.54673404148715868669198788016

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