Q: What are the prime factors of the number 223,016,220?

 A: 2, 3, 5, 7, 41, 1439

Why are those the prime factors of the number 223,016,220?

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 223,016,220

223,016,220
Factor Arrows
2111,508,110
Factor Arrows
255,754,055
Factor Arrows
318,584,685
Factor Arrows
36,194,895
Factor Arrows
32,064,965
Factor Arrows
5412,993
Factor Arrows
758,999
Factor Arrows
411,439

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, 7, 41, 1439

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 7 x 41 x 1,439 = 223,016,220

This can also be written as 22 x 33 x 51 x 71 x 411 x 1,4391 = 223,016,220

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


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