Q: What are the prime factors of the number 873,072?

 A: 2, 3, 43, 47

Why are those the prime factors of the number 873,072?

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 873,072

873,072
Factor Arrows
2436,536
Factor Arrows
2218,268
Factor Arrows
2109,134
Factor Arrows
254,567
Factor Arrows
318,189
Factor Arrows
36,063
Factor Arrows
32,021
Factor Arrows
4347

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, 43, 47

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 3 x 43 x 47 = 873,072

This can also be written as 24 x 33 x 431 x 471 = 873,072

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


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