Properties

Label 2-1680-28.27-c1-0-4
Degree $2$
Conductor $1680$
Sign $-0.627 - 0.778i$
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  − 3-s + i·5-s + (2.46 + 0.953i)7-s + 9-s + 4.70i·11-s + 2.93i·13-s i·15-s + 3.31i·17-s − 4.77·19-s + (−2.46 − 0.953i)21-s − 6.24i·23-s − 25-s − 27-s + 10.0·29-s − 10.0·31-s + ⋯
L(s)  = 1  − 0.577·3-s + 0.447i·5-s + (0.932 + 0.360i)7-s + 0.333·9-s + 1.41i·11-s + 0.814i·13-s − 0.258i·15-s + 0.803i·17-s − 1.09·19-s + (−0.538 − 0.208i)21-s − 1.30i·23-s − 0.200·25-s − 0.192·27-s + 1.87·29-s − 1.79·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.627 - 0.778i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.627 - 0.778i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-0.627 - 0.778i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (1231, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ -0.627 - 0.778i)\)

Particular Values

\(L(1)\) \(\approx\) \(1.115459851\)
\(L(\frac12)\) \(\approx\) \(1.115459851\)
\(L(\frac{3}{2})\) 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 \( 1 + T \)
5 \( 1 - iT \)
7 \( 1 + (-2.46 - 0.953i)T \)
good11 \( 1 - 4.70iT - 11T^{2} \)
13 \( 1 - 2.93iT - 13T^{2} \)
17 \( 1 - 3.31iT - 17T^{2} \)
19 \( 1 + 4.77T + 19T^{2} \)
23 \( 1 + 6.24iT - 23T^{2} \)
29 \( 1 - 10.0T + 29T^{2} \)
31 \( 1 + 10.0T + 31T^{2} \)
37 \( 1 + 4.80T + 37T^{2} \)
41 \( 1 + 9.92iT - 41T^{2} \)
43 \( 1 - 9.55iT - 43T^{2} \)
47 \( 1 + 7.14T + 47T^{2} \)
53 \( 1 - 5.21T + 53T^{2} \)
59 \( 1 - 4.31T + 59T^{2} \)
61 \( 1 - 7.53iT - 61T^{2} \)
67 \( 1 + 6.48iT - 67T^{2} \)
71 \( 1 + 1.65iT - 71T^{2} \)
73 \( 1 + 2.06iT - 73T^{2} \)
79 \( 1 - 12.8iT - 79T^{2} \)
83 \( 1 + 16.0T + 83T^{2} \)
89 \( 1 - 13.0iT - 89T^{2} \)
97 \( 1 - 1.74iT - 97T^{2} \)
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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

−9.742195285219644017756543837177, −8.761172821236083813033257195108, −8.105293957941451299758968513148, −6.99054055601518640029609690712, −6.61744434281939960683331022199, −5.53689104351258673340012056190, −4.60110112443056647207437225889, −4.09528919502682933491981832281, −2.39346153659905976939256762414, −1.66097543125998331286665391643, 0.46146587527738210505991487607, 1.58342406416997017381447604564, 3.10366563592021483723696861665, 4.13122260252501347967302085444, 5.16046429044944981524006554584, 5.57357408908154052711519775392, 6.62213182607485079696155042037, 7.54750513119455769994107430245, 8.344492929929650899812031350831, 8.861081572099015843421654967444

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