Q: What are the prime factors of the number 77,038,038?

 A: 2, 3, 7, 11, 31, 163

Why are those the prime factors of the number 77,038,038?

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 77,038,038

77,038,038
Factor Arrows
238,519,019
Factor Arrows
312,839,673
Factor Arrows
34,279,891
Factor Arrows
7611,413
Factor Arrows
1155,583
Factor Arrows
115,053
Factor Arrows
31163

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, 11, 31, 163

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 11 x 11 x 31 x 163 = 77,038,038

This can also be written as 21 x 32 x 71 x 112 x 311 x 1631 = 77,038,038

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


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