## The modular curve $X_{118f}$

Curve name $X_{118f}$
Index $48$
Level $16$
Genus $0$
Does the subgroup contain $-I$? No
Generating matrices $\left[ \begin{matrix} 3 & 3 \\ 0 & 3 \end{matrix}\right], \left[ \begin{matrix} 7 & 0 \\ 0 & 1 \end{matrix}\right], \left[ \begin{matrix} 5 & 0 \\ 0 & 5 \end{matrix}\right], \left[ \begin{matrix} 5 & 0 \\ 0 & 1 \end{matrix}\right]$
Images in lower levels
 Level Index of image Corresponding curve $2$ $3$ $X_{6}$ $4$ $12$ $X_{13h}$ $8$ $24$ $X_{36h}$
Meaning/Special name
Chosen covering $X_{118}$
Curves that $X_{118f}$ minimally covers
Curves that minimally cover $X_{118f}$
Curves that minimally cover $X_{118f}$ and have infinitely many rational points.
Model $\mathbb{P}^{1}$, a universal elliptic curve over an appropriate base is given by $y^2 = x^3 + A(t)x + B(t), \text{ where}$ $A(t) = -27t^{16} + 1296t^{12} - 21168t^{8} + 124416t^{4} - 110592$ $B(t) = 54t^{24} - 3888t^{20} + 110160t^{16} - 1524096t^{12} + 10119168t^{8} - 23887872t^{4} - 14155776$
Elliptic curve whose $2$-adic image is the subgroup $y^2 + xy + y = x^3 - x^2 - 197730032x + 1070230016756$, with conductor $7605$
Generic density of odd order reductions $25/224$