Q: What are the prime factors of the number 419,390?

 A: 2, 5, 17, 2467

Why are those the prime factors of the number 419,390?

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 419,390

419,390
Factor Arrows
2209,695
Factor Arrows
541,939
Factor Arrows
172,467

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, 5, 17, 2467

We can check our work by multiplying all of the prime factors together: 2 x 5 x 17 x 2,467 = 419,390

This can also be written as 21 x 51 x 171 x 2,4671 = 419,390

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


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