Q: What are the prime factors of the number 220,430,560?

 A: 2, 5, 7, 97, 2029

Why are those the prime factors of the number 220,430,560?

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 220,430,560

220,430,560
Factor Arrows
2110,215,280
Factor Arrows
255,107,640
Factor Arrows
227,553,820
Factor Arrows
213,776,910
Factor Arrows
26,888,455
Factor Arrows
51,377,691
Factor Arrows
7196,813
Factor Arrows
972,029

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, 5, 7, 97, 2029

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 97 x 2,029 = 220,430,560

This can also be written as 25 x 51 x 71 x 971 x 2,0291 = 220,430,560

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


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