Q: What are the prime factors of the number 401,301,408?

 A: 2, 3, 37, 112979

Why are those the prime factors of the number 401,301,408?

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 401,301,408

401,301,408
Factor Arrows
2200,650,704
Factor Arrows
2100,325,352
Factor Arrows
250,162,676
Factor Arrows
225,081,338
Factor Arrows
212,540,669
Factor Arrows
34,180,223
Factor Arrows
37112,979

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, 3, 37, 112979

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 37 x 112,979 = 401,301,408

This can also be written as 25 x 31 x 371 x 112,9791 = 401,301,408

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


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