Q: What are the prime factors of the number 249,600?

 A: 2, 3, 5, 13

Why are those the prime factors of the number 249,600?

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 249,600

249,600
Factor Arrows
2124,800
Factor Arrows
262,400
Factor Arrows
231,200
Factor Arrows
215,600
Factor Arrows
27,800
Factor Arrows
23,900
Factor Arrows
21,950
Factor Arrows
2975
Factor Arrows
3325
Factor Arrows
565
Factor Arrows
513

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, 5, 13

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 5 x 13 = 249,600

This can also be written as 28 x 31 x 52 x 131 = 249,600

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


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