Q: What are the prime factors of the number 1,149,792?

 A: 2, 3, 7, 29, 59

Why are those the prime factors of the number 1,149,792?

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 1,149,792

1,149,792
Factor Arrows
2574,896
Factor Arrows
2287,448
Factor Arrows
2143,724
Factor Arrows
271,862
Factor Arrows
235,931
Factor Arrows
311,977
Factor Arrows
71,711
Factor Arrows
2959

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, 7, 29, 59

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 7 x 29 x 59 = 1,149,792

This can also be written as 25 x 31 x 71 x 291 x 591 = 1,149,792

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


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