Invariants
| Level: | $72$ | $\SL_2$-level: | $18$ | 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 $3$ are rational) | Cusp widths | $6^{6}\cdot18^{2}$ | Cusp orbits | $1^{3}\cdot2\cdot3$ | ||
| 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: | $3$ | ||||||
| Rational CM points: | none |
Other labels
| Cummins and Pauli (CP) label: | 18F3 |
Level structure
| $\GL_2(\Z/72\Z)$-generators: | $\begin{bmatrix}7&60\\67&71\end{bmatrix}$, $\begin{bmatrix}22&39\\51&34\end{bmatrix}$, $\begin{bmatrix}59&51\\56&37\end{bmatrix}$ |
| Contains $-I$: | no $\quad$ (see 72.72.3.c.1 for the level structure with $-I$) |
| Cyclic 72-isogeny field degree: | $36$ |
| Cyclic 72-torsion field degree: | $288$ |
| Full 72-torsion field degree: | $41472$ |
Rational points
This modular curve has 3 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 |
|---|---|---|---|---|---|
| 24.48.1-24.bx.1.2 | $24$ | $3$ | $3$ | $1$ | $0$ |
| 36.72.0-9.a.1.4 | $36$ | $2$ | $2$ | $0$ | $0$ |
| 72.72.0-9.a.1.4 | $72$ | $2$ | $2$ | $0$ | $?$ |
This modular curve is minimally covered by the modular curves in the database listed below.
| Covering curve | Level | Index | Degree | Genus |
|---|---|---|---|---|
| 72.432.7-72.e.1.10 | $72$ | $3$ | $3$ | $7$ |
| 72.432.10-72.u.1.6 | $72$ | $3$ | $3$ | $10$ |
| 72.432.10-72.u.2.6 | $72$ | $3$ | $3$ | $10$ |
| 72.432.13-72.bc.1.4 | $72$ | $3$ | $3$ | $13$ |
| 72.432.13-72.be.1.6 | $72$ | $3$ | $3$ | $13$ |