128^4=2^218^3=2^9128^4*8^3=2^30N=30
128^4*8^3=(2^7*4)*(2^3*3)=2^28*2^9=2^(28+9)=2^37
128^4=2^21 8^3=2^9 128^4*8^3=2^30 N=30
37
