Q: What are the prime factors of the number 215,261,600?

 A: 2, 5, 23, 11699

Why are those the prime factors of the number 215,261,600?

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 215,261,600

215,261,600
Factor Arrows
2107,630,800
Factor Arrows
253,815,400
Factor Arrows
226,907,700
Factor Arrows
213,453,850
Factor Arrows
26,726,925
Factor Arrows
51,345,385
Factor Arrows
5269,077
Factor Arrows
2311,699

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, 23, 11699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 23 x 11,699 = 215,261,600

This can also be written as 25 x 52 x 231 x 11,6991 = 215,261,600

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


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