Q: What are the prime factors of the number 280,368?

 A: 2, 3, 11, 59

Why are those the prime factors of the number 280,368?

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 280,368

280,368
Factor Arrows
2140,184
Factor Arrows
270,092
Factor Arrows
235,046
Factor Arrows
217,523
Factor Arrows
35,841
Factor Arrows
31,947
Factor Arrows
3649
Factor Arrows
1159

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, 11, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 11 x 59 = 280,368

This can also be written as 24 x 33 x 111 x 591 = 280,368

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


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