Properties

Label 1-1609-1609.1608-r0-0-0
Degree $1$
Conductor $1609$
Sign $1$
Analytic cond. $7.47216$
Root an. cond. $7.47216$
Motivic weight $0$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 2-s + 3-s + 4-s + 5-s + 6-s − 7-s + 8-s + 9-s + 10-s + 11-s + 12-s + 13-s − 14-s + 15-s + 16-s − 17-s + 18-s − 19-s + 20-s − 21-s + 22-s − 23-s + 24-s + 25-s + 26-s + 27-s − 28-s + ⋯
L(s)  = 1  + 2-s + 3-s + 4-s + 5-s + 6-s − 7-s + 8-s + 9-s + 10-s + 11-s + 12-s + 13-s − 14-s + 15-s + 16-s − 17-s + 18-s − 19-s + 20-s − 21-s + 22-s − 23-s + 24-s + 25-s + 26-s + 27-s − 28-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1609 ^{s/2} \, \Gamma_{\R}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1609 ^{s/2} \, \Gamma_{\R}(s) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(1\)
Conductor: \(1609\)
Sign: $1$
Analytic conductor: \(7.47216\)
Root analytic conductor: \(7.47216\)
Motivic weight: \(0\)
Rational: yes
Arithmetic: yes
Character: $\chi_{1609} (1608, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((1,\ 1609,\ (0:\ ),\ 1)\)

Particular Values

\(L(\frac{1}{2})\) \(\approx\) \(5.373452271\)
\(L(\frac12)\) \(\approx\) \(5.373452271\)
\(L(1)\) \(\approx\) \(3.061169634\)
\(L(1)\) \(\approx\) \(3.061169634\)

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad1609 \( 1 \)
good2 \( 1 + T \)
3 \( 1 + T \)
5 \( 1 + T \)
7 \( 1 - T \)
11 \( 1 + T \)
13 \( 1 + T \)
17 \( 1 - T \)
19 \( 1 - T \)
23 \( 1 - T \)
29 \( 1 - T \)
31 \( 1 + T \)
37 \( 1 - T \)
41 \( 1 + T \)
43 \( 1 - T \)
47 \( 1 - T \)
53 \( 1 - T \)
59 \( 1 + T \)
61 \( 1 - T \)
67 \( 1 + T \)
71 \( 1 - T \)
73 \( 1 + T \)
79 \( 1 - T \)
83 \( 1 - T \)
89 \( 1 - T \)
97 \( 1 - T \)
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   \(L(s) = \displaystyle\prod_p \ (1 - \alpha_{p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−20.609438977965708218771214613841, −19.81276836665437625176257697843, −19.31417578855128012589641539332, −18.40740110978783857870371626722, −17.34351198249547162026759829085, −16.503425999280140287143089936676, −15.76223026965370833372586478727, −15.10717518089408192025698751529, −14.19602715676399508887431623259, −13.77108239190727136437545207723, −13.03057004456575617562264306271, −12.65784727027169559627700235376, −11.46440194384662493168674139941, −10.49735511567523847212917680571, −9.79179356723587508039390415861, −9.0013643837918238056771087398, −8.233988966406724346101447885651, −6.84117457507107153962315080088, −6.518496376202876873623110504334, −5.79768311442578100691711600895, −4.46051103570323942759477784676, −3.82565157667150926892654640762, −3.03458473151681647415218252350, −2.12021521747340844177830581406, −1.47714168874092913484817753657, 1.47714168874092913484817753657, 2.12021521747340844177830581406, 3.03458473151681647415218252350, 3.82565157667150926892654640762, 4.46051103570323942759477784676, 5.79768311442578100691711600895, 6.518496376202876873623110504334, 6.84117457507107153962315080088, 8.233988966406724346101447885651, 9.0013643837918238056771087398, 9.79179356723587508039390415861, 10.49735511567523847212917680571, 11.46440194384662493168674139941, 12.65784727027169559627700235376, 13.03057004456575617562264306271, 13.77108239190727136437545207723, 14.19602715676399508887431623259, 15.10717518089408192025698751529, 15.76223026965370833372586478727, 16.503425999280140287143089936676, 17.34351198249547162026759829085, 18.40740110978783857870371626722, 19.31417578855128012589641539332, 19.81276836665437625176257697843, 20.609438977965708218771214613841

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