Q: What are the prime factors of the number 66,780,556?

 A: 2, 17, 982067

Why are those the prime factors of the number 66,780,556?

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 66,780,556

66,780,556
Factor Arrows
233,390,278
Factor Arrows
216,695,139
Factor Arrows
17982,067

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, 17, 982067

We can check our work by multiplying all of the prime factors together: 2 x 2 x 17 x 982,067 = 66,780,556

This can also be written as 22 x 171 x 982,0671 = 66,780,556

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


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