Q: What are the prime factors of the number 72,777,421?

Why are those the prime factors of the number 72,777,421?

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 72,777,421

	72,777,421
241		301,981
	311		971

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:

241, 311, 971

We can check our work by multiplying all of the prime factors together: 241 x 311 x 971 = 72,777,421

This can also be written as 241¹ x 311¹ x 971¹ = 72,777,421

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

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