Q: What are the prime factors of the number 223,212,330?

 A: 2, 3, 5, 11, 103, 199

Why are those the prime factors of the number 223,212,330?

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 223,212,330

223,212,330
Factor Arrows
2111,606,165
Factor Arrows
337,202,055
Factor Arrows
312,400,685
Factor Arrows
52,480,137
Factor Arrows
11225,467
Factor Arrows
1120,497
Factor Arrows
103199

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, 11, 103, 199

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 11 x 11 x 103 x 199 = 223,212,330

This can also be written as 21 x 32 x 51 x 112 x 1031 x 1991 = 223,212,330

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


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