Properties

Label 2-1680-21.20-c1-0-2
Degree $2$
Conductor $1680$
Sign $0.594 - 0.803i$
Analytic cond. $13.4148$
Root an. cond. $3.66263$
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  + (−0.462 − 1.66i)3-s − 5-s + (−1.62 − 2.08i)7-s + (−2.57 + 1.54i)9-s − 0.196i·11-s + 2.37i·13-s + (0.462 + 1.66i)15-s − 3.36·17-s − 2.89i·19-s + (−2.72 + 3.68i)21-s + 5.80i·23-s + 25-s + (3.76 + 3.57i)27-s + 5.73i·29-s − 4.66i·31-s + ⋯
L(s)  = 1  + (−0.267 − 0.963i)3-s − 0.447·5-s + (−0.615 − 0.788i)7-s + (−0.857 + 0.514i)9-s − 0.0591i·11-s + 0.659i·13-s + (0.119 + 0.430i)15-s − 0.817·17-s − 0.663i·19-s + (−0.594 + 0.803i)21-s + 1.20i·23-s + 0.200·25-s + (0.725 + 0.688i)27-s + 1.06i·29-s − 0.838i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (0.594 - 0.803i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (0.594 - 0.803i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $0.594 - 0.803i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (881, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ 0.594 - 0.803i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.5671150958\)
\(L(\frac12)\) \(\approx\) \(0.5671150958\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 + (0.462 + 1.66i)T \)
5 \( 1 + T \)
7 \( 1 + (1.62 + 2.08i)T \)
good11 \( 1 + 0.196iT - 11T^{2} \)
13 \( 1 - 2.37iT - 13T^{2} \)
17 \( 1 + 3.36T + 17T^{2} \)
19 \( 1 + 2.89iT - 19T^{2} \)
23 \( 1 - 5.80iT - 23T^{2} \)
29 \( 1 - 5.73iT - 29T^{2} \)
31 \( 1 + 4.66iT - 31T^{2} \)
37 \( 1 + 7.34T + 37T^{2} \)
41 \( 1 - 8.59T + 41T^{2} \)
43 \( 1 - 0.444T + 43T^{2} \)
47 \( 1 - 5.43T + 47T^{2} \)
53 \( 1 - 2.24iT - 53T^{2} \)
59 \( 1 - 4.10T + 59T^{2} \)
61 \( 1 - 1.24iT - 61T^{2} \)
67 \( 1 + 7.26T + 67T^{2} \)
71 \( 1 - 8.21iT - 71T^{2} \)
73 \( 1 - 11.5iT - 73T^{2} \)
79 \( 1 - 9.71T + 79T^{2} \)
83 \( 1 + 5.51T + 83T^{2} \)
89 \( 1 - 2.30T + 89T^{2} \)
97 \( 1 + 6.59iT - 97T^{2} \)
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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

−9.284655154904928804874677845716, −8.690285673091027449982757404835, −7.56334296895961180443808002965, −7.15005718126269115296410509154, −6.48104134186597906133779062181, −5.53996197265902689830876119021, −4.44955293823038122306321701053, −3.50822322123027103700800932838, −2.36979557691855465531006481916, −1.06835902743799567375973631764, 0.25645620744159193699468686600, 2.41555493715124815076194445453, 3.32991950838985110101237212910, 4.21629355587796457787966768872, 5.08437483554706816905713064853, 5.95590713130678187339819208268, 6.59321064363213535250213920322, 7.81232732533167357498816284665, 8.692911169656877201505858343096, 9.140611144718964879590836674732

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