What are all the prime numbers of 56?

Answer 1

To find the prime numbers of 56, start with two numbers that when multiplied together equal 56. For example:

2 x 28 = 56.

Two is prime, but 28 is composite, so it needs to be factored.

2 x 2 x 14 = 56.

Now, 14 is prime, so factor it.

2 x 2 x 2 x 7 = 56.

All the factors are now prime, so the prime factors are 2 x 2 x 2 x 7.