Q: What are the prime factors of the number 729,792?

 A: 2, 3, 7, 181

Why are those the prime factors of the number 729,792?

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 729,792

729,792
Factor Arrows
2364,896
Factor Arrows
2182,448
Factor Arrows
291,224
Factor Arrows
245,612
Factor Arrows
222,806
Factor Arrows
211,403
Factor Arrows
33,801
Factor Arrows
31,267
Factor Arrows
7181

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, 7, 181

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 7 x 181 = 729,792

This can also be written as 26 x 32 x 71 x 1811 = 729,792

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


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