Q: What are the prime factors of the number 8,887,320?

 A: 2, 3, 5, 13, 211

Why are those the prime factors of the number 8,887,320?

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 8,887,320

8,887,320
Factor Arrows
24,443,660
Factor Arrows
22,221,830
Factor Arrows
21,110,915
Factor Arrows
3370,305
Factor Arrows
3123,435
Factor Arrows
341,145
Factor Arrows
313,715
Factor Arrows
52,743
Factor Arrows
13211

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, 5, 13, 211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 13 x 211 = 8,887,320

This can also be written as 23 x 34 x 51 x 131 x 2111 = 8,887,320

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


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