Invariants
| Level: | $280$ | $\SL_2$-level: | $20$ | Newform level: | $1$ | ||
| Index: | $144$ | $\PSL_2$-index: | $72$ | ||||
| Genus: | $3 = 1 + \frac{ 72 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 8 }{2}$ | ||||||
| Cusps: | $8$ (of which $4$ are rational) | Cusp widths | $2^{2}\cdot4^{2}\cdot10^{2}\cdot20^{2}$ | Cusp orbits | $1^{4}\cdot2^{2}$ | ||
| Elliptic points: | $0$ of order $2$ and $0$ of order $3$ | ||||||
| Analytic rank: | not computed | ||||||
| $\Q$-gonality: | $2 \le \gamma \le 3$ | ||||||
| $\overline{\Q}$-gonality: | $2 \le \gamma \le 3$ | ||||||
| Rational cusps: | $4$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 20J3 |
Level structure
| $\GL_2(\Z/280\Z)$-generators: | $\begin{bmatrix}37&210\\80&87\end{bmatrix}$, $\begin{bmatrix}73&210\\70&71\end{bmatrix}$, $\begin{bmatrix}123&220\\230&107\end{bmatrix}$, $\begin{bmatrix}181&90\\246&151\end{bmatrix}$, $\begin{bmatrix}217&60\\192&107\end{bmatrix}$, $\begin{bmatrix}229&180\\40&39\end{bmatrix}$, $\begin{bmatrix}279&60\\222&227\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 280.72.3.b.1 for the level structure with $-I$) |
| Cyclic 280-isogeny field degree: | $32$ |
| Cyclic 280-torsion field degree: | $3072$ |
| Full 280-torsion field degree: | $10321920$ |
Rational points
This modular curve has 4 rational cusps but no known non-cuspidal rational points.
Modular covers
This modular curve minimally covers the modular curves listed below.
| Covered curve | Level | Index | Degree | Genus | Rank |
|---|---|---|---|---|---|
| 40.72.1-10.a.1.1 | $40$ | $2$ | $2$ | $1$ | $0$ |
| 140.72.1-10.a.1.8 | $140$ | $2$ | $2$ | $1$ | $?$ |
| 280.24.0-56.b.1.7 | $280$ | $6$ | $6$ | $0$ | $?$ |
This modular curve is minimally covered by the modular curves in the database listed below.