Q: What are the prime factors of the number 66,535,120?

 A: 2, 5, 73, 11393

Why are those the prime factors of the number 66,535,120?

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 66,535,120

66,535,120
Factor Arrows
233,267,560
Factor Arrows
216,633,780
Factor Arrows
28,316,890
Factor Arrows
24,158,445
Factor Arrows
5831,689
Factor Arrows
7311,393

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, 73, 11393

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 73 x 11,393 = 66,535,120

This can also be written as 24 x 51 x 731 x 11,3931 = 66,535,120

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


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