Q: What are the prime factors of the number 866,272?

 A: 2, 11, 23, 107

Why are those the prime factors of the number 866,272?

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 866,272

866,272
Factor Arrows
2433,136
Factor Arrows
2216,568
Factor Arrows
2108,284
Factor Arrows
254,142
Factor Arrows
227,071
Factor Arrows
112,461
Factor Arrows
23107

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, 11, 23, 107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 23 x 107 = 866,272

This can also be written as 25 x 111 x 231 x 1071 = 866,272

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


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