Properties

Label 120.120.4-120.b.1.4
Level $120$
Index $120$
Genus $4$
Cusps $4$
$\Q$-cusps $2$

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Invariants

Level: $120$ $\SL_2$-level: $20$ Newform level: $1$
Index: $120$ $\PSL_2$-index:$60$
Genus: $4 = 1 + \frac{ 60 }{12} - \frac{ 0 }{4} - \frac{ 0 }{3} - \frac{ 4 }{2}$
Cusps: $4$ (of which $2$ are rational) Cusp widths $10^{2}\cdot20^{2}$ Cusp orbits $1^{2}\cdot2$
Elliptic points: $0$ of order $2$ and $0$ of order $3$
Analytic rank: not computed
$\Q$-gonality: $2 \le \gamma \le 4$
$\overline{\Q}$-gonality: $2 \le \gamma \le 4$
Rational cusps: $2$
Rational CM points: none

Other labels

Cummins and Pauli (CP) label: 20A4

Level structure

$\GL_2(\Z/120\Z)$-generators: $\begin{bmatrix}13&38\\118&117\end{bmatrix}$, $\begin{bmatrix}69&56\\82&9\end{bmatrix}$, $\begin{bmatrix}75&44\\2&65\end{bmatrix}$, $\begin{bmatrix}75&94\\88&109\end{bmatrix}$, $\begin{bmatrix}91&84\\88&119\end{bmatrix}$
Contains $-I$: no $\quad$ (see 120.60.4.b.1 for the level structure with $-I$)
Cyclic 120-isogeny field degree: $96$
Cyclic 120-torsion field degree: $3072$
Full 120-torsion field degree: $294912$

Rational points

This modular curve has 2 rational cusps but no known non-cuspidal rational points.

Modular covers

The following modular covers realize this modular curve as a fiber product over $X(1)$.

Factor curve Level Index Degree Genus Rank
$X_{S_4}(5)$ $5$ $24$ $12$ $0$ $0$
24.24.0-24.b.1.2 $24$ $5$ $5$ $0$ $0$

This modular curve minimally covers the modular curves listed below.

Covered curve Level Index Degree Genus Rank
24.24.0-24.b.1.2 $24$ $5$ $5$ $0$ $0$
40.60.2-10.a.1.1 $40$ $2$ $2$ $2$ $0$
60.60.2-10.a.1.1 $60$ $2$ $2$ $2$ $0$

This modular curve is minimally covered by the modular curves in the database listed below.

Covering curve Level Index Degree Genus
120.240.8-120.c.1.3 $120$ $2$ $2$ $8$
120.240.8-120.c.1.15 $120$ $2$ $2$ $8$
120.240.8-120.d.1.8 $120$ $2$ $2$ $8$
120.240.8-120.d.1.14 $120$ $2$ $2$ $8$
120.240.8-120.e.1.11 $120$ $2$ $2$ $8$
120.240.8-120.e.1.23 $120$ $2$ $2$ $8$
120.240.8-120.f.1.12 $120$ $2$ $2$ $8$
120.240.8-120.f.1.14 $120$ $2$ $2$ $8$
120.240.8-120.v.1.11 $120$ $2$ $2$ $8$
120.240.8-120.v.1.15 $120$ $2$ $2$ $8$
120.240.8-120.w.1.3 $120$ $2$ $2$ $8$
120.240.8-120.w.1.4 $120$ $2$ $2$ $8$
120.240.8-120.y.1.11 $120$ $2$ $2$ $8$
120.240.8-120.y.1.15 $120$ $2$ $2$ $8$
120.240.8-120.z.1.11 $120$ $2$ $2$ $8$
120.240.8-120.z.1.13 $120$ $2$ $2$ $8$
120.360.10-120.b.1.6 $120$ $3$ $3$ $10$
120.360.14-120.d.1.26 $120$ $3$ $3$ $14$
120.480.13-120.cx.1.3 $120$ $4$ $4$ $13$
120.480.17-120.fj.1.3 $120$ $4$ $4$ $17$