Question

whats is the product of prime factor of 315

Answer 1

315 is the answer the prime factors are 3,3,7,5

Answer 2

First, it is obviously divisible by 3, since the sum of the digits is divisible by 3 (3 + 1 + 5 = 9, which is divisible by 3). Start with that. 

Since we know 3 is a factor, we divide 315/3 to get 105. 

315 = 3 x 105 

Next, 105 is a factor of 3 as well. Divide that by 3. 
105 is equal to 3 x 35 

315 = 3 x 3 x 35 

Decompose 35 as 5 x 7. 

315 = 3 x 3 x 5 x 7

Hope it helps..!!