Question

The total number of prime factors of product 8 ^20*15^24*7^15 is

Answer 1

here, 8^20 =2^60
so,there are 60 2's
next one, ie
15^24= (3×5)^24

so here there are 24 3's,24 5's

next,
7^15
here there are 15 7's

as,2,3,,5,7 are primes.
totally,60+24+24+15=123

so answer is 123.