Q: What are the prime factors of the number 278,867,736?

 A: 2, 3, 7, 553309

Why are those the prime factors of the number 278,867,736?

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 278,867,736

278,867,736
Factor Arrows
2139,433,868
Factor Arrows
269,716,934
Factor Arrows
234,858,467
Factor Arrows
311,619,489
Factor Arrows
33,873,163
Factor Arrows
7553,309

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, 553309

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 553,309 = 278,867,736

This can also be written as 23 x 32 x 71 x 553,3091 = 278,867,736

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


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