Q: What are the prime factors of the number 73,664,220?

 A: 2, 3, 5, 7, 175391

Why are those the prime factors of the number 73,664,220?

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 73,664,220

73,664,220
Factor Arrows
236,832,110
Factor Arrows
218,416,055
Factor Arrows
36,138,685
Factor Arrows
51,227,737
Factor Arrows
7175,391

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, 175391

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 175,391 = 73,664,220

This can also be written as 22 x 31 x 51 x 71 x 175,3911 = 73,664,220

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


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