Q: What are the prime factors of the number 1,102,720?

 A: 2, 5, 1723

Why are those the prime factors of the number 1,102,720?

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 1,102,720

1,102,720
Factor Arrows
2551,360
Factor Arrows
2275,680
Factor Arrows
2137,840
Factor Arrows
268,920
Factor Arrows
234,460
Factor Arrows
217,230
Factor Arrows
28,615
Factor Arrows
51,723

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, 5, 1723

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 2 x 5 x 1,723 = 1,102,720

This can also be written as 27 x 51 x 1,7231 = 1,102,720

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


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