Q: What are the prime factors of the number 72,302,700?

 A: 2, 3, 5, 17, 14177

Why are those the prime factors of the number 72,302,700?

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 72,302,700

72,302,700
Factor Arrows
236,151,350
Factor Arrows
218,075,675
Factor Arrows
36,025,225
Factor Arrows
51,205,045
Factor Arrows
5241,009
Factor Arrows
1714,177

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, 17, 14177

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 17 x 14,177 = 72,302,700

This can also be written as 22 x 31 x 52 x 171 x 14,1771 = 72,302,700

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


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