Q: What are the prime factors of the number 502,440,020?

 A: 2, 5, 37, 71, 73, 131

Why are those the prime factors of the number 502,440,020?

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 502,440,020

502,440,020
Factor Arrows
2251,220,010
Factor Arrows
2125,610,005
Factor Arrows
525,122,001
Factor Arrows
37678,973
Factor Arrows
719,563
Factor Arrows
73131

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, 37, 71, 73, 131

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 37 x 71 x 73 x 131 = 502,440,020

This can also be written as 22 x 51 x 371 x 711 x 731 x 1311 = 502,440,020

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


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