Q: What are the prime factors of the number 539,448?

 A: 2, 3, 7, 13, 19

Why are those the prime factors of the number 539,448?

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 539,448

539,448
Factor Arrows
2269,724
Factor Arrows
2134,862
Factor Arrows
267,431
Factor Arrows
322,477
Factor Arrows
73,211
Factor Arrows
13247
Factor Arrows
1319

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, 13, 19

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 13 x 13 x 19 = 539,448

This can also be written as 23 x 31 x 71 x 132 x 191 = 539,448

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


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