The modular curve $X_{651}$

Curve name $X_{651}$
Index $96$
Level $32$
Genus $3$
Does the subgroup contain $-I$? Yes
Generating matrices $ \left[ \begin{matrix} 1 & 0 \\ 20 & 21 \end{matrix}\right], \left[ \begin{matrix} 1 & 1 \\ 30 & 31 \end{matrix}\right], \left[ \begin{matrix} 1 & 5 \\ 28 & 31 \end{matrix}\right], \left[ \begin{matrix} 1 & 4 \\ 0 & 1 \end{matrix}\right]$
Images in lower levels
LevelIndex of imageCorresponding curve
$2$ $3$ $X_{6}$
$4$ $12$ $X_{23}$
$8$ $24$ $X_{69}$
$16$ $48$ $X_{323}$
Meaning/Special name
Chosen covering $X_{323}$
Curves that $X_{651}$ minimally covers $X_{323}$
Curves that minimally cover $X_{651}$
Curves that minimally cover $X_{651}$ and have infinitely many rational points.
Model \[x^4 + x^2y^2 + 2x^2z^2 - y^3z + 2yz^3 = 0\]
Info about rational points
Rational pointImage on the $j$-line
$(0 : 1 : 0)$ \[ \infty \]
$(0 : 0 : 1)$ \[ \infty \]
Comments on finding rational points This curve is isomorphic to $X_{618}$.
Elliptic curve whose $2$-adic image is the subgroup None
Generic density of odd order reductions N/A

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