Properties

Label 2-1640-41.40-c1-0-30
Degree $2$
Conductor $1640$
Sign $0.672 + 0.740i$
Analytic cond. $13.0954$
Root an. cond. $3.61876$
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  + 2.65i·3-s − 5-s + 1.97i·7-s − 4.04·9-s − 5.81i·11-s − 1.97i·13-s − 2.65i·15-s + 2.65i·17-s − 8.26i·19-s − 5.23·21-s − 3.04·23-s + 25-s − 2.76i·27-s − 7.39i·29-s − 6.49·31-s + ⋯
L(s)  = 1  + 1.53i·3-s − 0.447·5-s + 0.745i·7-s − 1.34·9-s − 1.75i·11-s − 0.546i·13-s − 0.685i·15-s + 0.643i·17-s − 1.89i·19-s − 1.14·21-s − 0.634·23-s + 0.200·25-s − 0.532i·27-s − 1.37i·29-s − 1.16·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1640 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.672 + 0.740i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1640 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.672 + 0.740i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1640\)    =    \(2^{3} \cdot 5 \cdot 41\)
Sign: $0.672 + 0.740i$
Analytic conductor: \(13.0954\)
Root analytic conductor: \(3.61876\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1640} (81, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1640,\ (\ :1/2),\ 0.672 + 0.740i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.7682168435\)
\(L(\frac12)\) \(\approx\) \(0.7682168435\)
\(L(\frac{3}{2})\) 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 \( 1 + T \)
41 \( 1 + (4.30 + 4.74i)T \)
good3 \( 1 - 2.65iT - 3T^{2} \)
7 \( 1 - 1.97iT - 7T^{2} \)
11 \( 1 + 5.81iT - 11T^{2} \)
13 \( 1 + 1.97iT - 13T^{2} \)
17 \( 1 - 2.65iT - 17T^{2} \)
19 \( 1 + 8.26iT - 19T^{2} \)
23 \( 1 + 3.04T + 23T^{2} \)
29 \( 1 + 7.39iT - 29T^{2} \)
31 \( 1 + 6.49T + 31T^{2} \)
37 \( 1 - 1.45T + 37T^{2} \)
43 \( 1 + 11.3T + 43T^{2} \)
47 \( 1 + 10.0iT - 47T^{2} \)
53 \( 1 - 9.33iT - 53T^{2} \)
59 \( 1 - 7.15T + 59T^{2} \)
61 \( 1 - 9.72T + 61T^{2} \)
67 \( 1 - 1.15iT - 67T^{2} \)
71 \( 1 - 4.05iT - 71T^{2} \)
73 \( 1 + 1.59T + 73T^{2} \)
79 \( 1 - 1.57iT - 79T^{2} \)
83 \( 1 - 4.11T + 83T^{2} \)
89 \( 1 + 17.9iT - 89T^{2} \)
97 \( 1 - 12.8iT - 97T^{2} \)
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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

−9.139971828492265564348647188568, −8.687358924920554430164754236628, −8.071793308220773874806007203822, −6.72959813393347939876287851724, −5.64403730222312693147208662376, −5.26000144813132876462206314397, −4.09745345521367322470836044310, −3.46399976711725860526999046659, −2.56015149172486944881949137532, −0.29619079096306906098490376080, 1.40375150233782228300218548901, 2.03546466560503920474742035875, 3.49983361075254148535155330038, 4.45225240480219054903571784719, 5.51015308869037168052884429165, 6.82357110662940211354406547995, 6.93575743057629344395532924264, 7.78083026645325736212266234364, 8.290933198029373123355228148285, 9.558536054423451599104148525407

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