Characteristic polynomial
$$\begin{equation}\left(\lambda^{2} + 6 \lambda + 13\right)^{2} \left(\lambda^{2} - 2 \lambda + 5\right)^{2} \left(\lambda^{4} - 8 \lambda^{3} + 10 \lambda^{2} - 96 \lambda - 83\right) \left(\lambda^{6} + 8 \lambda^{5} + 36 \lambda^{4} - 37 \lambda^{3} - 186 \lambda^{2} + 776 \lambda + 2047\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda^{2} + 6 \lambda + 13\right) \left(\lambda^{2} - 2 \lambda + 5\right) \left(\lambda^{4} - 8 \lambda^{3} + 10 \lambda^{2} - 96 \lambda - 83\right) \left(\lambda^{6} + 8 \lambda^{5} + 36 \lambda^{4} - 37 \lambda^{3} - 186 \lambda^{2} + 776 \lambda + 2047\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 0 & 0 & 2 & 3 & 3 & 6 & 6 & 3 & 6 & 6 & 3 & 4 & 4 & 0 & 4 & 10 \\ 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 0 & 2 & 2 & 2 & 3 & 0 & 0 & 0 & -8 \\ 1 & 0 & -1 & 0 & 0 & 2 & 0 & 2 & 2 & 0 & 2 & 2 & 2 & 3 & 3 & 0 & 3 & 0 \\ 1 & 0 & 0 & -1 & 0 & 0 & 2 & 2 & 2 & 0 & 2 & 2 & 2 & 3 & 3 & 0 & 3 & 0 \\ 1 & 0 & 1 & 1 & 0 & 0 & 0 & 0 & -2 & 0 & -2 & -2 & -2 & 0 & 3 & 3 & 3 & 8 \\ 0 & 1 & 0 & 0 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & -2 & -2 & 2 & -6 \\ 0 & 1 & 0 & 0 & 0 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 2 & 2 & -2 & -6 \\ 0 & 1 & 0 & 0 & 2 & 1 & 1 & 0 & -1 & 0 & 1 & 1 & -1 & 0 & -2 & -2 & -2 & 0 \\ 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 1 & 0 & 2 & 2 & 2 & 6 \\ 0 & 0 & 1 & 1 & 0 & 0 & 0 & 0 & 0 & -2 & 0 & 0 & 1 & 2 & 2 & 0 & 2 & 0 \\ 0 & 0 & 2 & 0 & 1 & 0 & 0 & 0 & 0 & 1 & -1 & 0 & -1 & 0 & 2 & 2 & 0 & 6 \\ 0 & 0 & 0 & 2 & 1 & 0 & 0 & 0 & 0 & 1 & 0 & -1 & -1 & 0 & 0 & 0 & 2 & 6 \\ 0 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 1 & 0 & 1 & 1 & 1 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 1 & 1 & -1 & 0 & 5 & 2 & 2 & -2 & -2 & -1 & -1 & -1 & 4 \\ 0 & 0 & 0 & 0 & 0 & 2 & 0 & 3 & 3 & -3 & 1 & -3 & -1 & 1 & 0 & 0 & 1 & -4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & -1 & -3 & 3 & 3 & 3 & 4 & 0 & 0 & 0 & 0 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 2 & 2 & 0 & 0 & 0 & 4 & 3 & 1 & 1 & 1 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{5}{2} & 3 & \frac{3}{2} & 3 & 0\end{pmatrix}\notag\end{equation}$$