Q: What are the prime factors of the number 279,756?

 A: 2, 3, 19, 409

Why are those the prime factors of the number 279,756?

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 279,756

279,756
Factor Arrows
2139,878
Factor Arrows
269,939
Factor Arrows
323,313
Factor Arrows
37,771
Factor Arrows
19409

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, 19, 409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 19 x 409 = 279,756

This can also be written as 22 x 32 x 191 x 4091 = 279,756

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


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