Q: What are the prime factors of the number 482,240?

 A: 2, 5, 11, 137

Why are those the prime factors of the number 482,240?

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 482,240

482,240
Factor Arrows
2241,120
Factor Arrows
2120,560
Factor Arrows
260,280
Factor Arrows
230,140
Factor Arrows
215,070
Factor Arrows
27,535
Factor Arrows
51,507
Factor Arrows
11137

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, 137

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 11 x 137 = 482,240

This can also be written as 26 x 51 x 111 x 1371 = 482,240

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


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