## The modular curve $X_{187i}$

Curve name $X_{187i}$
Index $96$
Level $8$
Genus $0$
Does the subgroup contain $-I$? No
Generating matrices $\left[ \begin{matrix} 3 & 4 \\ 6 & 5 \end{matrix}\right], \left[ \begin{matrix} 3 & 0 \\ 6 & 5 \end{matrix}\right], \left[ \begin{matrix} 3 & 0 \\ 2 & 5 \end{matrix}\right], \left[ \begin{matrix} 5 & 0 \\ 2 & 7 \end{matrix}\right]$
Images in lower levels
 Level Index of image Corresponding curve $2$ $6$ $X_{8}$ $4$ $24$ $X_{58}$
Meaning/Special name
Chosen covering $X_{187}$
Curves that $X_{187i}$ minimally covers
Curves that minimally cover $X_{187i}$
Curves that minimally cover $X_{187i}$ and have infinitely many rational points.
Model $\mathbb{P}^{1}$, a universal elliptic curve over an appropriate base is given by $y^2 = x^3 + A(t)x + B(t), \text{ where}$ $A(t) = -108t^{16} - 24192t^{8} - 27648$ $B(t) = -432t^{24} + 228096t^{16} + 3649536t^{8} - 1769472$
Elliptic curve whose $2$-adic image is the subgroup $y^2 = x^3 - x^2 - 641x + 3105$, with conductor $960$
Generic density of odd order reductions $299/2688$