Q: What are the prime factors of the number 869,715?

 A: 3, 5, 7, 11, 251

Why are those the prime factors of the number 869,715?

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 869,715

869,715
Factor Arrows
3289,905
Factor Arrows
396,635
Factor Arrows
519,327
Factor Arrows
72,761
Factor Arrows
11251

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:

3, 5, 7, 11, 251

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 11 x 251 = 869,715

This can also be written as 32 x 51 x 71 x 111 x 2511 = 869,715

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


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