Q: What are the prime factors of the number 221,040,433?

Why are those the prime factors of the number 221,040,433?

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 221,040,433

	221,040,433
19		11,633,707
	647		17,981

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, 647, 17981

We can check our work by multiplying all of the prime factors together: 19 x 647 x 17,981 = 221,040,433

This can also be written as 19¹ x 647¹ x 17,981¹ = 221,040,433

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

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