Q: What are the prime factors of the number 220,880?

 A: 2, 5, 11, 251

Why are those the prime factors of the number 220,880?

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 220,880

220,880
Factor Arrows
2110,440
Factor Arrows
255,220
Factor Arrows
227,610
Factor Arrows
213,805
Factor Arrows
52,761
Factor Arrows
11251

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, 11, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 11 x 251 = 220,880

This can also be written as 24 x 51 x 111 x 2511 = 220,880

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


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