Q: What are the prime factors of the number 723,888?

 A: 2, 3, 11, 457

Why are those the prime factors of the number 723,888?

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 723,888

723,888
Factor Arrows
2361,944
Factor Arrows
2180,972
Factor Arrows
290,486
Factor Arrows
245,243
Factor Arrows
315,081
Factor Arrows
35,027
Factor Arrows
11457

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, 11, 457

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 11 x 457 = 723,888

This can also be written as 24 x 32 x 111 x 4571 = 723,888

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


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