Properties

Label 2-1989-1.1-c1-0-65
Degree $2$
Conductor $1989$
Sign $1$
Analytic cond. $15.8822$
Root an. cond. $3.98525$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2.79·2-s + 5.79·4-s + 5-s − 0.208·7-s + 10.5·8-s + 2.79·10-s + 0.791·11-s − 13-s − 0.582·14-s + 17.9·16-s − 17-s + 4.79·19-s + 5.79·20-s + 2.20·22-s − 7.58·23-s − 4·25-s − 2.79·26-s − 1.20·28-s − 9·29-s − 0.582·31-s + 28.9·32-s − 2.79·34-s − 0.208·35-s + 0.582·37-s + 13.3·38-s + 10.5·40-s + 9·43-s + ⋯
L(s)  = 1  + 1.97·2-s + 2.89·4-s + 0.447·5-s − 0.0788·7-s + 3.74·8-s + 0.882·10-s + 0.238·11-s − 0.277·13-s − 0.155·14-s + 4.48·16-s − 0.242·17-s + 1.09·19-s + 1.29·20-s + 0.470·22-s − 1.58·23-s − 0.800·25-s − 0.547·26-s − 0.228·28-s − 1.67·29-s − 0.104·31-s + 5.11·32-s − 0.478·34-s − 0.0352·35-s + 0.0957·37-s + 2.16·38-s + 1.67·40-s + 1.37·43-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1989 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1989 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1989\)    =    \(3^{2} \cdot 13 \cdot 17\)
Sign: $1$
Analytic conductor: \(15.8822\)
Root analytic conductor: \(3.98525\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 1989,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(6.927432913\)
\(L(\frac12)\) \(\approx\) \(6.927432913\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad3 \( 1 \)
13 \( 1 + T \)
17 \( 1 + T \)
good2 \( 1 - 2.79T + 2T^{2} \)
5 \( 1 - T + 5T^{2} \)
7 \( 1 + 0.208T + 7T^{2} \)
11 \( 1 - 0.791T + 11T^{2} \)
19 \( 1 - 4.79T + 19T^{2} \)
23 \( 1 + 7.58T + 23T^{2} \)
29 \( 1 + 9T + 29T^{2} \)
31 \( 1 + 0.582T + 31T^{2} \)
37 \( 1 - 0.582T + 37T^{2} \)
41 \( 1 + 41T^{2} \)
43 \( 1 - 9T + 43T^{2} \)
47 \( 1 + 3.58T + 47T^{2} \)
53 \( 1 - 7.79T + 53T^{2} \)
59 \( 1 + 8.58T + 59T^{2} \)
61 \( 1 - 11.7T + 61T^{2} \)
67 \( 1 + 4.41T + 67T^{2} \)
71 \( 1 + 2T + 71T^{2} \)
73 \( 1 - 8.58T + 73T^{2} \)
79 \( 1 + 8.58T + 79T^{2} \)
83 \( 1 + 4.58T + 83T^{2} \)
89 \( 1 - 15.9T + 89T^{2} \)
97 \( 1 - 14.9T + 97T^{2} \)
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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

−9.409238236111293147614991943784, −7.895597361737281177936433490654, −7.37077881772501712470701174459, −6.42513051436587893262599631917, −5.78028982566473091361388393580, −5.22120476527112420991759421370, −4.16815659854820814504846634635, −3.58245666235853924064529119159, −2.48250622083927589940322463339, −1.68295121708550894339422473691, 1.68295121708550894339422473691, 2.48250622083927589940322463339, 3.58245666235853924064529119159, 4.16815659854820814504846634635, 5.22120476527112420991759421370, 5.78028982566473091361388393580, 6.42513051436587893262599631917, 7.37077881772501712470701174459, 7.895597361737281177936433490654, 9.409238236111293147614991943784

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