Q: What are the prime factors of the number 66,573,568?

 A: 2, 19, 13687

Why are those the prime factors of the number 66,573,568?

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 66,573,568

66,573,568
Factor Arrows
233,286,784
Factor Arrows
216,643,392
Factor Arrows
28,321,696
Factor Arrows
24,160,848
Factor Arrows
22,080,424
Factor Arrows
21,040,212
Factor Arrows
2520,106
Factor Arrows
2260,053
Factor Arrows
1913,687

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, 19, 13687

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 19 x 13,687 = 66,573,568

This can also be written as 28 x 191 x 13,6871 = 66,573,568

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


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