Q: What are the prime factors of the number 1,179,072?

 A: 2, 3, 23, 89

Why are those the prime factors of the number 1,179,072?

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 1,179,072

1,179,072
Factor Arrows
2589,536
Factor Arrows
2294,768
Factor Arrows
2147,384
Factor Arrows
273,692
Factor Arrows
236,846
Factor Arrows
218,423
Factor Arrows
36,141
Factor Arrows
32,047
Factor Arrows
2389

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, 23, 89

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 23 x 89 = 1,179,072

This can also be written as 26 x 32 x 231 x 891 = 1,179,072

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


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