Properties

Label 2-1680-1.1-c1-0-19
Degree $2$
Conductor $1680$
Sign $-1$
Analytic cond. $13.4148$
Root an. cond. $3.66263$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 3-s + 5-s + 7-s + 9-s − 4·11-s − 2·13-s − 15-s + 2·17-s − 4·19-s − 21-s + 25-s − 27-s − 2·29-s − 8·31-s + 4·33-s + 35-s − 2·37-s + 2·39-s + 2·41-s − 4·43-s + 45-s + 49-s − 2·51-s − 10·53-s − 4·55-s + 4·57-s + 12·59-s + ⋯
L(s)  = 1  − 0.577·3-s + 0.447·5-s + 0.377·7-s + 1/3·9-s − 1.20·11-s − 0.554·13-s − 0.258·15-s + 0.485·17-s − 0.917·19-s − 0.218·21-s + 1/5·25-s − 0.192·27-s − 0.371·29-s − 1.43·31-s + 0.696·33-s + 0.169·35-s − 0.328·37-s + 0.320·39-s + 0.312·41-s − 0.609·43-s + 0.149·45-s + 1/7·49-s − 0.280·51-s − 1.37·53-s − 0.539·55-s + 0.529·57-s + 1.56·59-s + ⋯

Functional equation

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

Invariants

Degree: \(2\)
Conductor: \(1680\)    =    \(2^{4} \cdot 3 \cdot 5 \cdot 7\)
Sign: $-1$
Analytic conductor: \(13.4148\)
Root analytic conductor: \(3.66263\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 1680,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$Isogeny Class over $\mathbf{F}_p$
bad2 \( 1 \)
3 \( 1 + T \)
5 \( 1 - T \)
7 \( 1 - T \)
good11 \( 1 + 4 T + p T^{2} \) 1.11.e
13 \( 1 + 2 T + p T^{2} \) 1.13.c
17 \( 1 - 2 T + p T^{2} \) 1.17.ac
19 \( 1 + 4 T + p T^{2} \) 1.19.e
23 \( 1 + p T^{2} \) 1.23.a
29 \( 1 + 2 T + p T^{2} \) 1.29.c
31 \( 1 + 8 T + p T^{2} \) 1.31.i
37 \( 1 + 2 T + p T^{2} \) 1.37.c
41 \( 1 - 2 T + p T^{2} \) 1.41.ac
43 \( 1 + 4 T + p T^{2} \) 1.43.e
47 \( 1 + p T^{2} \) 1.47.a
53 \( 1 + 10 T + p T^{2} \) 1.53.k
59 \( 1 - 12 T + p T^{2} \) 1.59.am
61 \( 1 - 6 T + p T^{2} \) 1.61.ag
67 \( 1 + 12 T + p T^{2} \) 1.67.m
71 \( 1 + p T^{2} \) 1.71.a
73 \( 1 + 6 T + p T^{2} \) 1.73.g
79 \( 1 - 8 T + p T^{2} \) 1.79.ai
83 \( 1 + 4 T + p T^{2} \) 1.83.e
89 \( 1 - 2 T + p T^{2} \) 1.89.ac
97 \( 1 + 14 T + p T^{2} \) 1.97.o
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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

−9.009611137904859548991349662245, −8.060561717226913839356761311067, −7.38480877575677725511614353546, −6.49541389816732821186277653939, −5.48998134657804488643602211945, −5.10751363306408757224852565788, −4.01092057725677360635799148336, −2.70612473469008799964811139117, −1.69445881682715379624957094269, 0, 1.69445881682715379624957094269, 2.70612473469008799964811139117, 4.01092057725677360635799148336, 5.10751363306408757224852565788, 5.48998134657804488643602211945, 6.49541389816732821186277653939, 7.38480877575677725511614353546, 8.060561717226913839356761311067, 9.009611137904859548991349662245

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