Q: What are the prime factors of the number 989,792?

 A: 2, 30931

Why are those the prime factors of the number 989,792?

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 989,792

989,792
Factor Arrows
2494,896
Factor Arrows
2247,448
Factor Arrows
2123,724
Factor Arrows
261,862
Factor Arrows
230,931

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, 30931

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 30,931 = 989,792

This can also be written as 25 x 30,9311 = 989,792

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


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