Q: What are the prime factors of the number 321,220,099?

Why are those the prime factors of the number 321,220,099?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 321,220,099

	321,220,099
19		16,906,321
	107		158,003

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

19, 107, 158003

We can check our work by multiplying all of the prime factors together: 19 x 107 x 158,003 = 321,220,099

This can also be written as 19¹ x 107¹ x 158,003¹ = 321,220,099

If you would like to know more, or need additional explanation, please review our prime factorization explanation.

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