Question 292247
There are at least three ways:
1-Find all of the factors of 235 
You should know that 5 is a factor since multiples of 5 end in 0 and 5
so divide 235 by 5 and get 47
which is prime
There are two 5 and 47 both prime.
2-You should know that 2 is not a factor because 235 is not even
3-Divide 235 by each number