Q: What are the prime factors of the number 90,407,187?

 A: 3, 13, 19, 67, 607

Why are those the prime factors of the number 90,407,187?

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 90,407,187

90,407,187
Factor Arrows
330,135,729
Factor Arrows
310,045,243
Factor Arrows
13772,711
Factor Arrows
1940,669
Factor Arrows
67607

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:

3, 13, 19, 67, 607

We can check our work by multiplying all of the prime factors together: 3 x 3 x 13 x 19 x 67 x 607 = 90,407,187

This can also be written as 32 x 131 x 191 x 671 x 6071 = 90,407,187

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


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