Q: What are the prime factors of the number 1,111,392?

 A: 2, 3, 17, 227

Why are those the prime factors of the number 1,111,392?

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 1,111,392

1,111,392
Factor Arrows
2555,696
Factor Arrows
2277,848
Factor Arrows
2138,924
Factor Arrows
269,462
Factor Arrows
234,731
Factor Arrows
311,577
Factor Arrows
33,859
Factor Arrows
17227

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, 17, 227

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 17 x 227 = 1,111,392

This can also be written as 25 x 32 x 171 x 2271 = 1,111,392

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


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