Q: What are the prime factors of the number 422,120?

 A: 2, 5, 61, 173

Why are those the prime factors of the number 422,120?

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 422,120

422,120
Factor Arrows
2211,060
Factor Arrows
2105,530
Factor Arrows
252,765
Factor Arrows
510,553
Factor Arrows
61173

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, 61, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 61 x 173 = 422,120

This can also be written as 23 x 51 x 611 x 1731 = 422,120

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


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