Characteristic polynomial
$$\begin{equation}\left(\lambda - 1\right) \left(\lambda^{2} + 6 \lambda + 13\right) \left(\lambda^{2} + 7 \lambda + 19\right) \left(\lambda^{8} - 6 \lambda^{7} - 47 \lambda^{6} + 118 \lambda^{5} - 76 \lambda^{4} - 4550 \lambda^{3} - 21027 \lambda^{2} - 82458 \lambda - 108259\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda - 1\right) \left(\lambda^{2} + 6 \lambda + 13\right) \left(\lambda^{2} + 7 \lambda + 19\right) \left(\lambda^{8} - 6 \lambda^{7} - 47 \lambda^{6} + 118 \lambda^{5} - 76 \lambda^{4} - 4550 \lambda^{3} - 21027 \lambda^{2} - 82458 \lambda - 108259\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 0 & 8 & 4 & 0 & 3 & 3 & 12 & 12 & 8 & 0 & 8 & 20 \\ 2 & 0 & 0 & 1 & 8 & 4 & -2 & 4 & 0 & 12 & 12 & 0 & 0 \\ 1 & 0 & 0 & 1 & 0 & 0 & 0 & 4 & 4 & 3 & 0 & 3 & 8 \\ 1 & 0 & 2 & -1 & 0 & 0 & 2 & 4 & 4 & 0 & 0 & 0 & 0 \\ 0 & 1 & 2 & 0 & 0 & 1 & 0 & 1 & 0 & 4 & 4 & -2 & 0 \\ 0 & 1 & 0 & 3 & 2 & -1 & 0 & 2 & 0 & 4 & 4 & 0 & 0 \\ 0 & 2 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 4 & 0 & 8 & 12 \\ 0 & 0 & 1 & 1 & 0 & 0 & 0 & -1 & 2 & 0 & 0 & 2 & 0 \\ 0 & 0 & 1 & 0 & 0 & 0 & 0 & 1 & -2 & 0 & 0 & 0 & 3 \\ 0 & 0 & 0 & 0 & 1 & 4 & 1 & 3 & 0 & 1 & 2 & 2 & 4 \\ 0 & 0 & 0 & 0 & 1 & -3 & -1 & 1 & 3 & -1 & -2 & -2 & -4 \\ 0 & 0 & 0 & 0 & 2 & 0 & 1 & 0 & 0 & 1 & 0 & 0 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 4 & 3 & 2 & 0\end{pmatrix}\notag\end{equation}$$