Q: What are the prime factors of the number 66,060,742?

 A: 2, 11, 17, 173, 1021

Why are those the prime factors of the number 66,060,742?

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 66,060,742

66,060,742
Factor Arrows
233,030,371
Factor Arrows
113,002,761
Factor Arrows
17176,633
Factor Arrows
1731,021

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, 11, 17, 173, 1021

We can check our work by multiplying all of the prime factors together: 2 x 11 x 17 x 173 x 1,021 = 66,060,742

This can also be written as 21 x 111 x 171 x 1731 x 1,0211 = 66,060,742

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


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