Q: What are the prime factors of the number 443,072?

 A: 2, 7, 23, 43

Why are those the prime factors of the number 443,072?

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 443,072

443,072
Factor Arrows
2221,536
Factor Arrows
2110,768
Factor Arrows
255,384
Factor Arrows
227,692
Factor Arrows
213,846
Factor Arrows
26,923
Factor Arrows
7989
Factor Arrows
2343

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, 7, 23, 43

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 7 x 23 x 43 = 443,072

This can also be written as 26 x 71 x 231 x 431 = 443,072

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


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