Q: What are the prime factors of the number 499,100?

 A: 2, 5, 7, 23, 31

Why are those the prime factors of the number 499,100?

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 499,100

499,100
Factor Arrows
2249,550
Factor Arrows
2124,775
Factor Arrows
524,955
Factor Arrows
54,991
Factor Arrows
7713
Factor Arrows
2331

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, 23, 31

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 7 x 23 x 31 = 499,100

This can also be written as 22 x 52 x 71 x 231 x 311 = 499,100

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


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