Q: What are the prime factors of the number 18,880?

 A: 2, 5, 59

Why are those the prime factors of the number 18,880?

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 18,880

18,880
Factor Arrows
29,440
Factor Arrows
24,720
Factor Arrows
22,360
Factor Arrows
21,180
Factor Arrows
2590
Factor Arrows
2295
Factor Arrows
559

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, 59

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 5 x 59 = 18,880

This can also be written as 26 x 51 x 591 = 18,880

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


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