Q: What are the prime factors of the number 388,311,702?

 A: 2, 3, 19, 79, 43117

Why are those the prime factors of the number 388,311,702?

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 388,311,702

388,311,702
Factor Arrows
2194,155,851
Factor Arrows
364,718,617
Factor Arrows
193,406,243
Factor Arrows
7943,117

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, 19, 79, 43117

We can check our work by multiplying all of the prime factors together: 2 x 3 x 19 x 79 x 43,117 = 388,311,702

This can also be written as 21 x 31 x 191 x 791 x 43,1171 = 388,311,702

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


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