Properties

Label 2-40-5.4-c1-0-1
Degree $2$
Conductor $40$
Sign $0.894 + 0.447i$
Analytic cond. $0.319401$
Root an. cond. $0.565156$
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  − 2i·3-s + (−1 + 2i)5-s + 2i·7-s − 9-s − 4·11-s − 4i·13-s + (4 + 2i)15-s + 4·19-s + 4·21-s + 2i·23-s + (−3 − 4i)25-s − 4i·27-s − 2·29-s + 8i·33-s + (−4 − 2i)35-s + ⋯
L(s)  = 1  − 1.15i·3-s + (−0.447 + 0.894i)5-s + 0.755i·7-s − 0.333·9-s − 1.20·11-s − 1.10i·13-s + (1.03 + 0.516i)15-s + 0.917·19-s + 0.872·21-s + 0.417i·23-s + (−0.600 − 0.800i)25-s − 0.769i·27-s − 0.371·29-s + 1.39i·33-s + (−0.676 − 0.338i)35-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 40 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.894 + 0.447i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 40 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.894 + 0.447i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(40\)    =    \(2^{3} \cdot 5\)
Sign: $0.894 + 0.447i$
Analytic conductor: \(0.319401\)
Root analytic conductor: \(0.565156\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{40} (9, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 40,\ (\ :1/2),\ 0.894 + 0.447i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.712587 - 0.168219i\)
\(L(\frac12)\) \(\approx\) \(0.712587 - 0.168219i\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
5 \( 1 + (1 - 2i)T \)
good3 \( 1 + 2iT - 3T^{2} \)
7 \( 1 - 2iT - 7T^{2} \)
11 \( 1 + 4T + 11T^{2} \)
13 \( 1 + 4iT - 13T^{2} \)
17 \( 1 - 17T^{2} \)
19 \( 1 - 4T + 19T^{2} \)
23 \( 1 - 2iT - 23T^{2} \)
29 \( 1 + 2T + 29T^{2} \)
31 \( 1 + 31T^{2} \)
37 \( 1 - 4iT - 37T^{2} \)
41 \( 1 - 2T + 41T^{2} \)
43 \( 1 - 6iT - 43T^{2} \)
47 \( 1 + 6iT - 47T^{2} \)
53 \( 1 - 4iT - 53T^{2} \)
59 \( 1 - 12T + 59T^{2} \)
61 \( 1 + 10T + 61T^{2} \)
67 \( 1 - 14iT - 67T^{2} \)
71 \( 1 - 8T + 71T^{2} \)
73 \( 1 + 8iT - 73T^{2} \)
79 \( 1 + 16T + 79T^{2} \)
83 \( 1 + 2iT - 83T^{2} \)
89 \( 1 + 6T + 89T^{2} \)
97 \( 1 - 16iT - 97T^{2} \)
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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

−15.85623487396185355848626453485, −15.05703307574073467618807206524, −13.60018089567225583580829239729, −12.63359234089730320646127387448, −11.53442586127015926715224259275, −10.16278367615633358640160989689, −8.113042478958499833782988951324, −7.25786572854953621558079942252, −5.69744188589088268818483882099, −2.78874555368698009720649366526, 3.98962169942933263048874949446, 5.11483059456094680659949847368, 7.50468587465601502535680789764, 9.026825353043187813555511512476, 10.14549722939175421713086739992, 11.31195885869802604868138270701, 12.79232493421510484778669632700, 14.04463007559186991357323450273, 15.52656668748200601127586916507, 16.19698357044329524928241643066

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