Q: What are the prime factors of the number 32,120,220?

 A: 2, 3, 5, 11, 41, 1187

Why are those the prime factors of the number 32,120,220?

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 32,120,220

32,120,220
Factor Arrows
216,060,110
Factor Arrows
28,030,055
Factor Arrows
32,676,685
Factor Arrows
5535,337
Factor Arrows
1148,667
Factor Arrows
411,187

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, 41, 1187

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 11 x 41 x 1,187 = 32,120,220

This can also be written as 22 x 31 x 51 x 111 x 411 x 1,1871 = 32,120,220

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


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