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3*3*7
63 21,3 7,3,3
63=21x3=3x7x3
63 ^ 7*9 ^ 3*3
63 3,21 3,3,7 35 5,7
its not your face it is infact 63 / \ 7 9 / \ 3 3
61 is already prime. It doesn't need a tree.