Properties

Label 2-688-43.42-c4-0-8
Degree $2$
Conductor $688$
Sign $-0.776 - 0.630i$
Analytic cond. $71.1185$
Root an. cond. $8.43318$
Motivic weight $4$
Arithmetic yes
Rational no
Primitive yes
Self-dual no
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 12.3i·3-s + 21.9i·5-s + 63.3i·7-s − 71.0·9-s + 1.17·11-s − 173.·13-s + 271.·15-s + 469.·17-s + 27.8i·19-s + 780.·21-s − 79.3·23-s + 141.·25-s − 122. i·27-s − 696. i·29-s − 1.19e3·31-s + ⋯
L(s)  = 1  − 1.37i·3-s + 0.879i·5-s + 1.29i·7-s − 0.877·9-s + 0.00967·11-s − 1.02·13-s + 1.20·15-s + 1.62·17-s + 0.0770i·19-s + 1.77·21-s − 0.150·23-s + 0.226·25-s − 0.167i·27-s − 0.828i·29-s − 1.23·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 688 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.776 - 0.630i)\, \overline{\Lambda}(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 688 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & (-0.776 - 0.630i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(688\)    =    \(2^{4} \cdot 43\)
Sign: $-0.776 - 0.630i$
Analytic conductor: \(71.1185\)
Root analytic conductor: \(8.43318\)
Motivic weight: \(4\)
Rational: no
Arithmetic: yes
Character: $\chi_{688} (257, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 688,\ (\ :2),\ -0.776 - 0.630i)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(0.4189645057\)
\(L(\frac12)\) \(\approx\) \(0.4189645057\)
\(L(3)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
43 \( 1 + (-1.43e3 - 1.16e3i)T \)
good3 \( 1 + 12.3iT - 81T^{2} \)
5 \( 1 - 21.9iT - 625T^{2} \)
7 \( 1 - 63.3iT - 2.40e3T^{2} \)
11 \( 1 - 1.17T + 1.46e4T^{2} \)
13 \( 1 + 173.T + 2.85e4T^{2} \)
17 \( 1 - 469.T + 8.35e4T^{2} \)
19 \( 1 - 27.8iT - 1.30e5T^{2} \)
23 \( 1 + 79.3T + 2.79e5T^{2} \)
29 \( 1 + 696. iT - 7.07e5T^{2} \)
31 \( 1 + 1.19e3T + 9.23e5T^{2} \)
37 \( 1 - 1.53e3iT - 1.87e6T^{2} \)
41 \( 1 + 2.45e3T + 2.82e6T^{2} \)
47 \( 1 + 1.69e3T + 4.87e6T^{2} \)
53 \( 1 + 1.99e3T + 7.89e6T^{2} \)
59 \( 1 + 3.56e3T + 1.21e7T^{2} \)
61 \( 1 + 5.44e3iT - 1.38e7T^{2} \)
67 \( 1 + 4.93e3T + 2.01e7T^{2} \)
71 \( 1 - 9.66e3iT - 2.54e7T^{2} \)
73 \( 1 + 5.60e3iT - 2.83e7T^{2} \)
79 \( 1 - 1.14e4T + 3.89e7T^{2} \)
83 \( 1 + 5.52e3T + 4.74e7T^{2} \)
89 \( 1 + 2.55e3iT - 6.27e7T^{2} \)
97 \( 1 - 3.65e3T + 8.85e7T^{2} \)
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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

−10.15455319009835028037525951658, −9.378269107884767012917990816275, −8.155624957399794995467058043185, −7.61427738675453897962233887779, −6.72341278360664173383088146984, −5.99410034237080944344998067888, −5.07959473498383544399553037554, −3.22806622911911695076934688295, −2.45705945984204162950417838505, −1.48904117870924614759535255360, 0.098783986261198633154608917457, 1.36413412820279608786042519875, 3.25521398131995958757041934337, 4.04319283564290735405011224791, 4.89678329542046002011258600380, 5.48300313106697524129534400241, 7.09127010141081629528057238030, 7.82031621674628966308147054750, 9.001404297100736570450711041026, 9.606917662521697630322005246633

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