Q: What are the prime factors of the number 66,177,360?

 A: 2, 3, 5, 107, 859

Why are those the prime factors of the number 66,177,360?

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 66,177,360

66,177,360
Factor Arrows
233,088,680
Factor Arrows
216,544,340
Factor Arrows
28,272,170
Factor Arrows
24,136,085
Factor Arrows
31,378,695
Factor Arrows
3459,565
Factor Arrows
591,913
Factor Arrows
107859

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, 5, 107, 859

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 107 x 859 = 66,177,360

This can also be written as 24 x 32 x 51 x 1071 x 8591 = 66,177,360

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


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