Q: What are the prime factors of the number 278,534,879?

 A: 7, 29, 67, 20479

Why are those the prime factors of the number 278,534,879?

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 278,534,879

278,534,879
Factor Arrows
739,790,697
Factor Arrows
291,372,093
Factor Arrows
6720,479

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:

7, 29, 67, 20479

We can check our work by multiplying all of the prime factors together: 7 x 29 x 67 x 20,479 = 278,534,879

This can also be written as 71 x 291 x 671 x 20,4791 = 278,534,879

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


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