what number is not a prime factor
5 is a prime factor of both numbers.
5 is the greatest prime factor of 20.
2 and 5
A factor can or cannot be a prime number Ex: 2 is the factor of all other even numbers its a prime number but 9 is a factor of 18 and its not a prime number A prime is a factor but a factor being a prime number varies
2 AND 5
The only prime number that is a factor of both 20 and 32 is 2. Note: The only prime factor of 32 is 2. 32 = 2 x 2 x 2 x 2 x 2.
20 - 10 and 2 (2 is prime) from 10 do 5 and 2 (both prime)
21 is not a prime factor, it is 3 x 7
2 and 5
20 10,2 5,2,2
No, 20 isn't prime.