Q: What are the prime factors of the number 85,216,930?

 A: 2, 5, 83, 1237

Why are those the prime factors of the number 85,216,930?

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 85,216,930

85,216,930
Factor Arrows
242,608,465
Factor Arrows
58,521,693
Factor Arrows
83102,671
Factor Arrows
831,237

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, 5, 83, 1237

We can check our work by multiplying all of the prime factors together: 2 x 5 x 83 x 83 x 1,237 = 85,216,930

This can also be written as 21 x 51 x 832 x 1,2371 = 85,216,930

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


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