Q: What are the prime factors of the number 278,362,832?

 A: 2, 11, 1581607

Why are those the prime factors of the number 278,362,832?

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 278,362,832

278,362,832
Factor Arrows
2139,181,416
Factor Arrows
269,590,708
Factor Arrows
234,795,354
Factor Arrows
217,397,677
Factor Arrows
111,581,607

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, 11, 1581607

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 1,581,607 = 278,362,832

This can also be written as 24 x 111 x 1,581,6071 = 278,362,832

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


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