Q: What are the prime factors of the number 90,835,938?

 A: 2, 3, 79, 107, 199

Why are those the prime factors of the number 90,835,938?

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 90,835,938

90,835,938
Factor Arrows
245,417,969
Factor Arrows
315,139,323
Factor Arrows
35,046,441
Factor Arrows
31,682,147
Factor Arrows
7921,293
Factor Arrows
107199

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, 79, 107, 199

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 79 x 107 x 199 = 90,835,938

This can also be written as 21 x 33 x 791 x 1071 x 1991 = 90,835,938

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


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