Properties

Label 2-1680-5.4-c1-0-2
Degree $2$
Conductor $1680$
Sign $-0.662 - 0.749i$
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  + i·3-s + (−1.48 − 1.67i)5-s i·7-s − 9-s − 2·11-s + 1.35i·13-s + (1.67 − 1.48i)15-s + 3.35i·17-s + 5.35·19-s + 21-s − 4.96i·23-s + (−0.612 + 4.96i)25-s i·27-s − 7.92·29-s − 4.57·31-s + ⋯
L(s)  = 1  + 0.577i·3-s + (−0.662 − 0.749i)5-s − 0.377i·7-s − 0.333·9-s − 0.603·11-s + 0.374i·13-s + (0.432 − 0.382i)15-s + 0.812i·17-s + 1.22·19-s + 0.218·21-s − 1.03i·23-s + (−0.122 + 0.992i)25-s − 0.192i·27-s − 1.47·29-s − 0.821·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.662 - 0.749i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.662 - 0.749i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-0.662 - 0.749i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (1009, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ -0.662 - 0.749i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.6015597493\)
\(L(\frac12)\) \(\approx\) \(0.6015597493\)
\(L(\frac{3}{2})\) 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 \( 1 - iT \)
5 \( 1 + (1.48 + 1.67i)T \)
7 \( 1 + iT \)
good11 \( 1 + 2T + 11T^{2} \)
13 \( 1 - 1.35iT - 13T^{2} \)
17 \( 1 - 3.35iT - 17T^{2} \)
19 \( 1 - 5.35T + 19T^{2} \)
23 \( 1 + 4.96iT - 23T^{2} \)
29 \( 1 + 7.92T + 29T^{2} \)
31 \( 1 + 4.57T + 31T^{2} \)
37 \( 1 - 0.775iT - 37T^{2} \)
41 \( 1 - 3.73T + 41T^{2} \)
43 \( 1 - 12.6iT - 43T^{2} \)
47 \( 1 - 9.92iT - 47T^{2} \)
53 \( 1 - 8.57iT - 53T^{2} \)
59 \( 1 + 8.62T + 59T^{2} \)
61 \( 1 + 8.70T + 61T^{2} \)
67 \( 1 - 9.92iT - 67T^{2} \)
71 \( 1 + 2T + 71T^{2} \)
73 \( 1 + 9.35iT - 73T^{2} \)
79 \( 1 - 10.7T + 79T^{2} \)
83 \( 1 + 3.22iT - 83T^{2} \)
89 \( 1 + 1.03T + 89T^{2} \)
97 \( 1 - 18.4iT - 97T^{2} \)
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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

−9.367888246853116659315416354685, −9.105350712553769506833067461085, −7.79766294316717871363515221120, −7.72047531327429551191753963209, −6.32140997624745520931678555135, −5.41062421564043324500928430482, −4.58201445019367074307619770349, −3.92452534324292257502031178352, −2.92114043076329080577023644199, −1.33895383511386401285699749202, 0.23563322294345529994145419479, 1.96028284945980152550128341701, 3.03039466229066130997813957209, 3.71544286381283675176396632105, 5.21619207035762950330610227702, 5.70648654268914698712469585562, 6.96310661805904065525807764614, 7.43168858831877222904416355019, 8.006008821325226433172550139599, 9.057049496970721009047241266648

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