Q: What are the prime factors of the number 470,240?

 A: 2, 5, 2939

Why are those the prime factors of the number 470,240?

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 470,240

470,240
Factor Arrows
2235,120
Factor Arrows
2117,560
Factor Arrows
258,780
Factor Arrows
229,390
Factor Arrows
214,695
Factor Arrows
52,939

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, 2939

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 2,939 = 470,240

This can also be written as 25 x 51 x 2,9391 = 470,240

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


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