Characteristic polynomial
$$\begin{equation}\left(\lambda - 1\right) \left(\lambda^{12} + 3 \lambda^{11} - 37 \lambda^{10} - 639 \lambda^{9} - 4010 \lambda^{8} - 12037 \lambda^{7} - 38495 \lambda^{6} + 61344 \lambda^{5} + 659048 \lambda^{4} - 734079 \lambda^{3} - 1835078 \lambda^{2} + 3331005 \lambda - 1430879\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda - 1\right) \left(\lambda^{12} + 3 \lambda^{11} - 37 \lambda^{10} - 639 \lambda^{9} - 4010 \lambda^{8} - 12037 \lambda^{7} - 38495 \lambda^{6} + 61344 \lambda^{5} + 659048 \lambda^{4} - 734079 \lambda^{3} - 1835078 \lambda^{2} + 3331005 \lambda - 1430879\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 2 & 4 & 2 & 9 & 9 & 9 & 15 & 12 & 32 & 16 & 16 & 20 \\ 1 & 0 & 0 & 1 & 2 & 0 & 0 & 6 & 4 & 0 & -6 & 0 & -8 \\ 1 & 0 & 0 & 2 & 0 & 2 & 0 & -4 & 0 & 6 & 9 & 6 & 16 \\ 1 & 0 & 0 & -1 & 2 & 2 & 2 & 6 & 4 & 15 & 9 & 6 & 8 \\ 0 & 1 & 1 & -\frac{5}{2} & 0 & 2 & -2 & 1 & -\frac{7}{2} & -11 & -5 & -6 & -9 \\ 0 & 1 & 0 & 2 & 0 & -1 & -1 & 0 & 2 & 6 & 2 & 4 & 0 \\ 0 & 1 & 0 & 0 & 0 & 1 & 1 & 0 & 1 & 6 & 6 & 4 & 6 \\ 0 & 0 & 1 & \frac{5}{2} & 0 & 0 & 1 & -1 & -\frac{1}{2} & 3 & 3 & 2 & 9 \\ 0 & 0 & 1 & 0 & 0 & 0 & 1 & 2 & 1 & 2 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 2 & 4 & 3 & 2 & 0 & 0 & 0 & 0 & 4 \\ 0 & 0 & 0 & 0 & 1 & -1 & -\frac{1}{2} & 0 & 3 & 2 & 0 & 2 & -4 \\ 0 & 0 & 0 & 0 & -1 & -1 & -\frac{11}{4} & \frac{5}{2} & 1 & -1 & 0 & -1 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & \frac{9}{2} & \frac{5}{2} & 3 & 0\end{pmatrix}\notag\end{equation}$$