Q: What are the prime factors of the number 320,332,220?

 A: 2, 5, 13, 947, 1301

Why are those the prime factors of the number 320,332,220?

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 320,332,220

320,332,220
Factor Arrows
2160,166,110
Factor Arrows
280,083,055
Factor Arrows
516,016,611
Factor Arrows
131,232,047
Factor Arrows
9471,301

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, 13, 947, 1301

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 13 x 947 x 1,301 = 320,332,220

This can also be written as 22 x 51 x 131 x 9471 x 1,3011 = 320,332,220

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


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