Q: What are the prime factors of the number 499,128?

 A: 2, 3, 7, 2971

Why are those the prime factors of the number 499,128?

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 499,128

499,128
Factor Arrows
2249,564
Factor Arrows
2124,782
Factor Arrows
262,391
Factor Arrows
320,797
Factor Arrows
72,971

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, 3, 7, 2971

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 2,971 = 499,128

This can also be written as 23 x 31 x 71 x 2,9711 = 499,128

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


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