3 x 3 x 5 x 5 = 225
2 is already prime; no factorization.
The prime factors are: 2, 3
11.25
There is only one even prime number. A prime number is any number that only has only one and itself as factors. By definition even numbers have a factor of two. Therefore the only even number that is prime is the number 2.
2 x 2 x 2 x 3
Yes. Any time three is a factor, it is a prime factor.
It is a factor of 132, not a prime factor.
All numbers have factors. Some factors are prime numbers. A prime factor is a factor that is a prime number. A common prime factor is a prime factor that appears on the list of factors of two or more given numbers.
As a product of its prime factors: 2*5*7*7 = 490
19 is a prime factor.
35 can be a factor, but it is not prime.