Q: What are the prime factors of the number 10,355,328?

 A: 2, 3, 89, 101

Why are those the prime factors of the number 10,355,328?

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 10,355,328

10,355,328
Factor Arrows
25,177,664
Factor Arrows
22,588,832
Factor Arrows
21,294,416
Factor Arrows
2647,208
Factor Arrows
2323,604
Factor Arrows
2161,802
Factor Arrows
280,901
Factor Arrows
326,967
Factor Arrows
38,989
Factor Arrows
89101

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, 89, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 89 x 101 = 10,355,328

This can also be written as 27 x 32 x 891 x 1011 = 10,355,328

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


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