Q: What are the prime factors of the number 66,756,375?

 A: 3, 5, 7, 173

Why are those the prime factors of the number 66,756,375?

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 66,756,375

66,756,375
Factor Arrows
322,252,125
Factor Arrows
37,417,375
Factor Arrows
51,483,475
Factor Arrows
5296,695
Factor Arrows
559,339
Factor Arrows
78,477
Factor Arrows
71,211
Factor Arrows
7173

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:

3, 5, 7, 173

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 5 x 7 x 7 x 7 x 173 = 66,756,375

This can also be written as 32 x 53 x 73 x 1731 = 66,756,375

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


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