Q: What are the prime factors of the number 421,105,663?

Why are those the prime factors of the number 421,105,663?

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 421,105,663

	421,105,663
11		38,282,333
	101		379,033

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:

11, 101, 379033

We can check our work by multiplying all of the prime factors together: 11 x 101 x 379,033 = 421,105,663

This can also be written as 11¹ x 101¹ x 379,033¹ = 421,105,663

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

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