Q: What are the prime factors of the number 422,368?

 A: 2, 67, 197

Why are those the prime factors of the number 422,368?

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 422,368

422,368
Factor Arrows
2211,184
Factor Arrows
2105,592
Factor Arrows
252,796
Factor Arrows
226,398
Factor Arrows
213,199
Factor Arrows
67197

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, 67, 197

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 67 x 197 = 422,368

This can also be written as 25 x 671 x 1971 = 422,368

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


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