Q: What are the prime factors of the number 83,085,660?

 A: 2, 3, 5, 7, 23, 47, 61

Why are those the prime factors of the number 83,085,660?

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 83,085,660

83,085,660
Factor Arrows
241,542,830
Factor Arrows
220,771,415
Factor Arrows
36,923,805
Factor Arrows
32,307,935
Factor Arrows
5461,587
Factor Arrows
765,941
Factor Arrows
232,867
Factor Arrows
4761

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, 7, 23, 47, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 7 x 23 x 47 x 61 = 83,085,660

This can also be written as 22 x 32 x 51 x 71 x 231 x 471 x 611 = 83,085,660

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


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