4 breaks to 2 and 2
54 breaks to 6 and 9
6 breaks to 3 and 2
9 breaks to 3 and 3
So 4 is 2^2
And 54 is 2*3^3
I'm not sure h7, but I think the questioner wants to know the factor tree of 454....so we have
454 =
227 X 2
Both of these are prime.....so.....that's it !!!