Q: What are the prime factors of the number 891,336?

 A: 2, 3, 37139

Why are those the prime factors of the number 891,336?

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 891,336

891,336
Factor Arrows
2445,668
Factor Arrows
2222,834
Factor Arrows
2111,417
Factor Arrows
337,139

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, 37139

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 37,139 = 891,336

This can also be written as 23 x 31 x 37,1391 = 891,336

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


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