Q: What are the prime factors of the number 85,702,536?

 A: 2, 3, 132257

Why are those the prime factors of the number 85,702,536?

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 85,702,536

85,702,536
Factor Arrows
242,851,268
Factor Arrows
221,425,634
Factor Arrows
210,712,817
Factor Arrows
33,570,939
Factor Arrows
31,190,313
Factor Arrows
3396,771
Factor Arrows
3132,257

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, 132257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 132,257 = 85,702,536

This can also be written as 23 x 34 x 132,2571 = 85,702,536

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


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