Q: What are the prime factors of the number 39,768,792?

 A: 2, 3, 7, 4831

Why are those the prime factors of the number 39,768,792?

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 39,768,792

39,768,792
Factor Arrows
219,884,396
Factor Arrows
29,942,198
Factor Arrows
24,971,099
Factor Arrows
31,657,033
Factor Arrows
7236,719
Factor Arrows
733,817
Factor Arrows
74,831

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, 7, 4831

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 7 x 7 x 4,831 = 39,768,792

This can also be written as 23 x 31 x 73 x 4,8311 = 39,768,792

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


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