Q: What are the prime factors of the number 1,087,232?

 A: 2, 31, 137

Why are those the prime factors of the number 1,087,232?

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 1,087,232

1,087,232
Factor Arrows
2543,616
Factor Arrows
2271,808
Factor Arrows
2135,904
Factor Arrows
267,952
Factor Arrows
233,976
Factor Arrows
216,988
Factor Arrows
28,494
Factor Arrows
24,247
Factor Arrows
31137

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, 31, 137

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 2 x 31 x 137 = 1,087,232

This can also be written as 28 x 311 x 1371 = 1,087,232

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


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