Q: What are the prime factors of the number 280,464,525?

 A: 3, 5, 11, 1399

Why are those the prime factors of the number 280,464,525?

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 280,464,525

280,464,525
Factor Arrows
393,488,175
Factor Arrows
331,162,725
Factor Arrows
310,387,575
Factor Arrows
33,462,525
Factor Arrows
31,154,175
Factor Arrows
3384,725
Factor Arrows
576,945
Factor Arrows
515,389
Factor Arrows
111,399

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:

3, 5, 11, 1399

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 5 x 5 x 11 x 1,399 = 280,464,525

This can also be written as 36 x 52 x 111 x 1,3991 = 280,464,525

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


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