Q: What are the prime factors of the number 739,728?

 A: 2, 3, 11, 467

Why are those the prime factors of the number 739,728?

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 739,728

739,728
Factor Arrows
2369,864
Factor Arrows
2184,932
Factor Arrows
292,466
Factor Arrows
246,233
Factor Arrows
315,411
Factor Arrows
35,137
Factor Arrows
11467

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, 467

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 467 = 739,728

This can also be written as 24 x 32 x 111 x 4671 = 739,728

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


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