Q: What are the prime factors of the number 90,856,164?

 A: 2, 3, 7, 23, 31, 37, 41

Why are those the prime factors of the number 90,856,164?

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 90,856,164

90,856,164
Factor Arrows
245,428,082
Factor Arrows
222,714,041
Factor Arrows
37,571,347
Factor Arrows
71,081,621
Factor Arrows
2347,027
Factor Arrows
311,517
Factor Arrows
3741

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, 23, 31, 37, 41

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 23 x 31 x 37 x 41 = 90,856,164

This can also be written as 22 x 31 x 71 x 231 x 311 x 371 x 411 = 90,856,164

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


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