Q: What are the prime factors of the number 322,326,405?

 A: 3, 5, 89, 139, 193

Why are those the prime factors of the number 322,326,405?

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 322,326,405

322,326,405
Factor Arrows
3107,442,135
Factor Arrows
335,814,045
Factor Arrows
311,938,015
Factor Arrows
52,387,603
Factor Arrows
8926,827
Factor Arrows
139193

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:

3, 5, 89, 139, 193

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 89 x 139 x 193 = 322,326,405

This can also be written as 33 x 51 x 891 x 1391 x 1931 = 322,326,405

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


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