Q: What are the prime factors of the number 66,780,600?

 A: 2, 3, 5, 111301

Why are those the prime factors of the number 66,780,600?

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 66,780,600

66,780,600
Factor Arrows
233,390,300
Factor Arrows
216,695,150
Factor Arrows
28,347,575
Factor Arrows
32,782,525
Factor Arrows
5556,505
Factor Arrows
5111,301

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, 3, 5, 111301

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 111,301 = 66,780,600

This can also be written as 23 x 31 x 52 x 111,3011 = 66,780,600

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


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