Q: What are the prime factors of the number 275,072?

 A: 2, 7, 307

Why are those the prime factors of the number 275,072?

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 275,072

275,072
Factor Arrows
2137,536
Factor Arrows
268,768
Factor Arrows
234,384
Factor Arrows
217,192
Factor Arrows
28,596
Factor Arrows
24,298
Factor Arrows
22,149
Factor Arrows
7307

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, 7, 307

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 307 = 275,072

This can also be written as 27 x 71 x 3071 = 275,072

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


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