Find GCD(21,33⋅52)\text{GCD}(2^{1}, 3^{3} \cdot 5^{2})GCD(21,33⋅52).
222^{2}22
111
22⋅322^2 \cdot 3^222⋅32
2⋅3⋅52 \cdot 3 \cdot 52⋅3⋅5