Q: What are the prime factors of the number 401,326,624?

 A: 2, 12541457

Why are those the prime factors of the number 401,326,624?

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 401,326,624

401,326,624
Factor Arrows
2200,663,312
Factor Arrows
2100,331,656
Factor Arrows
250,165,828
Factor Arrows
225,082,914
Factor Arrows
212,541,457

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:

2, 12541457

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 12,541,457 = 401,326,624

This can also be written as 25 x 12,541,4571 = 401,326,624

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


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