Q: What are the prime factors of the number 66,123,264?

 A: 2, 3, 43049

Why are those the prime factors of the number 66,123,264?

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 66,123,264

66,123,264
Factor Arrows
233,061,632
Factor Arrows
216,530,816
Factor Arrows
28,265,408
Factor Arrows
24,132,704
Factor Arrows
22,066,352
Factor Arrows
21,033,176
Factor Arrows
2516,588
Factor Arrows
2258,294
Factor Arrows
2129,147
Factor Arrows
343,049

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, 43049

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 43,049 = 66,123,264

This can also be written as 29 x 31 x 43,0491 = 66,123,264

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


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