Q: What are the prime factors of the number 215,321,232?

 A: 2, 3, 7, 640837

Why are those the prime factors of the number 215,321,232?

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 215,321,232

215,321,232
Factor Arrows
2107,660,616
Factor Arrows
253,830,308
Factor Arrows
226,915,154
Factor Arrows
213,457,577
Factor Arrows
34,485,859
Factor Arrows
7640,837

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, 7, 640837

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 640,837 = 215,321,232

This can also be written as 24 x 31 x 71 x 640,8371 = 215,321,232

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


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