Q: What are the prime factors of the number 66,767,166?

 A: 2, 3, 37, 47, 79

Why are those the prime factors of the number 66,767,166?

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 66,767,166

66,767,166
Factor Arrows
233,383,583
Factor Arrows
311,127,861
Factor Arrows
33,709,287
Factor Arrows
31,236,429
Factor Arrows
3412,143
Factor Arrows
3137,381
Factor Arrows
373,713
Factor Arrows
4779

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, 37, 47, 79

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 37 x 47 x 79 = 66,767,166

This can also be written as 21 x 35 x 371 x 471 x 791 = 66,767,166

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


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