Q: What are the prime factors of the number 215,504,240?

 A: 2, 5, 7, 17, 22637

Why are those the prime factors of the number 215,504,240?

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 215,504,240

215,504,240
Factor Arrows
2107,752,120
Factor Arrows
253,876,060
Factor Arrows
226,938,030
Factor Arrows
213,469,015
Factor Arrows
52,693,803
Factor Arrows
7384,829
Factor Arrows
1722,637

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, 7, 17, 22637

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 17 x 22,637 = 215,504,240

This can also be written as 24 x 51 x 71 x 171 x 22,6371 = 215,504,240

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


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