Q: What are the prime factors of the number 266,320?

 A: 2, 5, 3329

Why are those the prime factors of the number 266,320?

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 266,320

266,320
Factor Arrows
2133,160
Factor Arrows
266,580
Factor Arrows
233,290
Factor Arrows
216,645
Factor Arrows
53,329

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, 5, 3329

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 3,329 = 266,320

This can also be written as 24 x 51 x 3,3291 = 266,320

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


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