Prime Factorization of 21

Prime Factorization of 21
What are the prime factors of 21?

The prime factors of 21 are the prime numbers that can be divided into 21 exactly, with no remainder. The prime factorization of 21 is the list of prime factors of 21.

If you multiply all the prime factors of 21 you will get 21.

To find all the prime factors of 21, divide it by the lowest prime number possible.

Then divide that result by the lowest prime number possible. Keep doing this until the result itself is a prime number.

The prime factorization of 21 will be all the prime numbers you used to divide, in addition to the last result, which is a prime number.

The math and the solutions to prime factorization of 21 is as follows:

21 / 3 = 7

3 x 7

NOTE: The solution above must be correct, because they are all prime numbers and if you multiply them together you will find that they equal 21.

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Prime Factorization of 22
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Factors of 21
Don't confuse prime factors with factors! Go here if you want to see all the factors of 21.