Q: What are the prime factors of the number 211,154,555?

Why are those the prime factors of the number 211,154,555?

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 211,154,555

	211,154,555
5		42,230,911

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:

5, 42230911

We can check our work by multiplying all of the prime factors together: 5 x 42,230,911 = 211,154,555

This can also be written as 5¹ x 42,230,911¹ = 211,154,555

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

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