Q: What are the prime factors of the number 66,267,600?

 A: 2, 3, 5, 7, 23

Why are those the prime factors of the number 66,267,600?

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 66,267,600

66,267,600
Factor Arrows
233,133,800
Factor Arrows
216,566,900
Factor Arrows
28,283,450
Factor Arrows
24,141,725
Factor Arrows
31,380,575
Factor Arrows
5276,115
Factor Arrows
555,223
Factor Arrows
77,889
Factor Arrows
71,127
Factor Arrows
7161
Factor Arrows
723

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, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 7 x 7 x 7 x 7 x 23 = 66,267,600

This can also be written as 24 x 31 x 52 x 74 x 231 = 66,267,600

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


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