Q: What are the prime factors of the number 669,888?

 A: 2, 3, 1163

Why are those the prime factors of the number 669,888?

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 669,888

669,888
Factor Arrows
2334,944
Factor Arrows
2167,472
Factor Arrows
283,736
Factor Arrows
241,868
Factor Arrows
220,934
Factor Arrows
210,467
Factor Arrows
33,489
Factor Arrows
31,163

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, 1163

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 3 x 3 x 1,163 = 669,888

This can also be written as 26 x 32 x 1,1631 = 669,888

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


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