Q: What are the prime factors of the number 278,214?

 A: 2, 3, 89, 521

Why are those the prime factors of the number 278,214?

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 278,214

278,214
Factor Arrows
2139,107
Factor Arrows
346,369
Factor Arrows
89521

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, 89, 521

We can check our work by multiplying all of the prime factors together: 2 x 3 x 89 x 521 = 278,214

This can also be written as 21 x 31 x 891 x 5211 = 278,214

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


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