Q: What are the prime factors of the number 66,905,055?

 A: 3, 5, 7, 83, 853

Why are those the prime factors of the number 66,905,055?

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 66,905,055

66,905,055
Factor Arrows
322,301,685
Factor Arrows
37,433,895
Factor Arrows
32,477,965
Factor Arrows
5495,593
Factor Arrows
770,799
Factor Arrows
83853

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, 83, 853

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 7 x 83 x 853 = 66,905,055

This can also be written as 33 x 51 x 71 x 831 x 8531 = 66,905,055

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


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