Q: What are the prime factors of the number 86,708,856?

 A: 2, 3, 13, 19, 14627

Why are those the prime factors of the number 86,708,856?

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 86,708,856

86,708,856
Factor Arrows
243,354,428
Factor Arrows
221,677,214
Factor Arrows
210,838,607
Factor Arrows
33,612,869
Factor Arrows
13277,913
Factor Arrows
1914,627

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, 13, 19, 14627

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 13 x 19 x 14,627 = 86,708,856

This can also be written as 23 x 31 x 131 x 191 x 14,6271 = 86,708,856

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


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