Q: What are the prime factors of the number 221,023,224?

 A: 2, 3, 109, 28163

Why are those the prime factors of the number 221,023,224?

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 221,023,224

221,023,224
Factor Arrows
2110,511,612
Factor Arrows
255,255,806
Factor Arrows
227,627,903
Factor Arrows
39,209,301
Factor Arrows
33,069,767
Factor Arrows
10928,163

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, 109, 28163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 109 x 28,163 = 221,023,224

This can also be written as 23 x 32 x 1091 x 28,1631 = 221,023,224

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


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