Q: What are the prime factors of the number 40,389,060?

 A: 2, 3, 5, 19, 71, 499

Why are those the prime factors of the number 40,389,060?

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 40,389,060

40,389,060
Factor Arrows
220,194,530
Factor Arrows
210,097,265
Factor Arrows
33,365,755
Factor Arrows
5673,151
Factor Arrows
1935,429
Factor Arrows
71499

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, 3, 5, 19, 71, 499

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 19 x 71 x 499 = 40,389,060

This can also be written as 22 x 31 x 51 x 191 x 711 x 4991 = 40,389,060

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


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