Characteristic polynomial
$$\begin{equation}\left(\lambda + 3\right)^{3} \left(\lambda + 7\right) \left(\lambda^{2} - 5 \lambda - 25\right) \left(\lambda^{7} + 3 \lambda^{6} - 136 \lambda^{5} - 1826 \lambda^{4} - 9606 \lambda^{3} - 25148 \lambda^{2} - 35791 \lambda - 19529\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 3\right)^{2} \left(\lambda + 7\right) \left(\lambda^{2} - 5 \lambda - 25\right) \left(\lambda^{7} + 3 \lambda^{6} - 136 \lambda^{5} - 1826 \lambda^{4} - 9606 \lambda^{3} - 25148 \lambda^{2} - 35791 \lambda - 19529\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 12 & 4 & 12 & 54 & 24 & 24 & 0 & 21 & 48 & 96 & 0 & 20 \\ 1 & -1 & 2 & 3 & 8 & 0 & 0 & -4 & 4 & 6 & 12 & 0 & 0 \\ 1 & 1 & -2 & 0 & 8 & 12 & 12 & 8 & 2 & 21 & 54 & 24 & 48 \\ 1 & 2 & 0 & 0 & 12 & 8 & 4 & 0 & 4 & 12 & 24 & 0 & 0 \\ 0 & 1 & 0 & 1 & -1 & 0 & 2 & 0 & 1 & 0 & 0 & -4 & 0 \\ 0 & 2 & 1 & 0 & 3 & -1 & 3 & 2 & 1 & 4 & 8 & 0 & 6 \\ 0 & 0 & 1 & 1 & 1 & 2 & -2 & 0 & 0 & 4 & 12 & 8 & 12 \\ 0 & 0 & 1 & 0 & 0 & 1 & 0 & -2 & 0 & 2 & 8 & 12 & 15 \\ 0 & 0 & 0 & 1 & 2 & 0 & 0 & 0 & -2 & 4 & 8 & 0 & 0 \\ 0 & 0 & 0 & 0 & 1 & -8 & 1 & -4 & 2 & -6 & -10 & -12 & -12 \\ 0 & 0 & 0 & 0 & 2 & 5 & 1 & 2 & 0 & 3 & 5 & 8 & 8 \\ 0 & 0 & 0 & 0 & 0 & 0 & 1 & 1 & 0 & 0 & 1 & -2 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 5 & 3 & 0\end{pmatrix}\notag\end{equation}$$