Q: What are the prime factors of the number 892,640?

 A: 2, 5, 7, 797

Why are those the prime factors of the number 892,640?

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 892,640

892,640
Factor Arrows
2446,320
Factor Arrows
2223,160
Factor Arrows
2111,580
Factor Arrows
255,790
Factor Arrows
227,895
Factor Arrows
55,579
Factor Arrows
7797

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, 7, 797

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 797 = 892,640

This can also be written as 25 x 51 x 71 x 7971 = 892,640

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


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