Q: What are the prime factors of the number 279,200?

 A: 2, 5, 349

Why are those the prime factors of the number 279,200?

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 279,200

279,200
Factor Arrows
2139,600
Factor Arrows
269,800
Factor Arrows
234,900
Factor Arrows
217,450
Factor Arrows
28,725
Factor Arrows
51,745
Factor Arrows
5349

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, 349

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 349 = 279,200

This can also be written as 25 x 52 x 3491 = 279,200

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


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