Properties

Label 2-1680-20.7-c1-0-26
Degree $2$
Conductor $1680$
Sign $-0.525 + 0.850i$
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  + (0.707 + 0.707i)3-s + (−2 + i)5-s + (0.707 − 0.707i)7-s + 1.00i·9-s − 2.82i·11-s + (−3 + 3i)13-s + (−2.12 − 0.707i)15-s + (−1 − i)17-s − 2.82·19-s + 1.00·21-s + (−2.82 − 2.82i)23-s + (3 − 4i)25-s + (−0.707 + 0.707i)27-s − 8i·29-s + 8.48i·31-s + ⋯
L(s)  = 1  + (0.408 + 0.408i)3-s + (−0.894 + 0.447i)5-s + (0.267 − 0.267i)7-s + 0.333i·9-s − 0.852i·11-s + (−0.832 + 0.832i)13-s + (−0.547 − 0.182i)15-s + (−0.242 − 0.242i)17-s − 0.648·19-s + 0.218·21-s + (−0.589 − 0.589i)23-s + (0.600 − 0.800i)25-s + (−0.136 + 0.136i)27-s − 1.48i·29-s + 1.52i·31-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & (-0.525 + 0.850i)\, \overline{\Lambda}(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1680 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & (-0.525 + 0.850i)\, \overline{\Lambda}(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-0.525 + 0.850i$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: $\chi_{1680} (127, \cdot )$
Primitive: yes
Self-dual: no
Analytic rank: \(0\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ -0.525 + 0.850i)\)

Particular Values

\(L(1)\) \(\approx\) \(0.4244606018\)
\(L(\frac12)\) \(\approx\) \(0.4244606018\)
\(L(\frac{3}{2})\) 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 \( 1 + (-0.707 - 0.707i)T \)
5 \( 1 + (2 - i)T \)
7 \( 1 + (-0.707 + 0.707i)T \)
good11 \( 1 + 2.82iT - 11T^{2} \)
13 \( 1 + (3 - 3i)T - 13iT^{2} \)
17 \( 1 + (1 + i)T + 17iT^{2} \)
19 \( 1 + 2.82T + 19T^{2} \)
23 \( 1 + (2.82 + 2.82i)T + 23iT^{2} \)
29 \( 1 + 8iT - 29T^{2} \)
31 \( 1 - 8.48iT - 31T^{2} \)
37 \( 1 + (7 + 7i)T + 37iT^{2} \)
41 \( 1 + 41T^{2} \)
43 \( 1 + (2.82 + 2.82i)T + 43iT^{2} \)
47 \( 1 + (-5.65 + 5.65i)T - 47iT^{2} \)
53 \( 1 + (5 - 5i)T - 53iT^{2} \)
59 \( 1 - 11.3T + 59T^{2} \)
61 \( 1 + 8T + 61T^{2} \)
67 \( 1 + (5.65 - 5.65i)T - 67iT^{2} \)
71 \( 1 - 2.82iT - 71T^{2} \)
73 \( 1 + (-3 + 3i)T - 73iT^{2} \)
79 \( 1 + 11.3T + 79T^{2} \)
83 \( 1 + (11.3 + 11.3i)T + 83iT^{2} \)
89 \( 1 + 16iT - 89T^{2} \)
97 \( 1 + (9 + 9i)T + 97iT^{2} \)
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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

−8.776429402074930785367223685487, −8.519521352009588678714426406101, −7.44669612560142535315217384435, −6.92615637961207457908364999557, −5.84626572257785608322400598278, −4.62521039789881931661007378053, −4.08909877540454688640744356308, −3.13039099990642473581834132518, −2.10448591185899194652274340603, −0.14765755496898873332588825544, 1.51316190600882165920283186606, 2.63851282979309530073712403323, 3.72847616833573489123787147606, 4.64581722971009158000727706886, 5.40741298768931278536138154425, 6.61808141069863641463989716197, 7.45211504595261612944726026134, 7.982294756664006207359534580164, 8.665720916668257896514932545060, 9.508881292001852721800332934841

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