Q: What are the prime factors of the number 421,610?

 A: 2, 5, 7, 19, 317

Why are those the prime factors of the number 421,610?

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 421,610

421,610
Factor Arrows
2210,805
Factor Arrows
542,161
Factor Arrows
76,023
Factor Arrows
19317

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, 7, 19, 317

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 19 x 317 = 421,610

This can also be written as 21 x 51 x 71 x 191 x 3171 = 421,610

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


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