Q: What are the prime factors of the number 220,022,208?

 A: 2, 3, 7, 197, 277

Why are those the prime factors of the number 220,022,208?

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 220,022,208

220,022,208
Factor Arrows
2110,011,104
Factor Arrows
255,005,552
Factor Arrows
227,502,776
Factor Arrows
213,751,388
Factor Arrows
26,875,694
Factor Arrows
23,437,847
Factor Arrows
31,145,949
Factor Arrows
3381,983
Factor Arrows
754,569
Factor Arrows
197277

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, 7, 197, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 197 x 277 = 220,022,208

This can also be written as 26 x 32 x 71 x 1971 x 2771 = 220,022,208

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


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