Q: What are the prime factors of the number 725,376?

 A: 2, 3, 1889

Why are those the prime factors of the number 725,376?

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 725,376

725,376
Factor Arrows
2362,688
Factor Arrows
2181,344
Factor Arrows
290,672
Factor Arrows
245,336
Factor Arrows
222,668
Factor Arrows
211,334
Factor Arrows
25,667
Factor Arrows
31,889

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, 1889

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 1,889 = 725,376

This can also be written as 27 x 31 x 1,8891 = 725,376

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


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