SI. 1 For all integers $m$ and $n, m \otimes n$ is defined as $m \otimes n=m^{n}+n^{m}$. If $2 \otimes P=100$, find the value of $P$.
$\begin{array}{l}2^{P}+P^{2}=100 \\ 64+36=2^{6}+6^{2}=100, P=6\end{array}$