Q: What are the prime factors of the number 215,341,456?

 A: 2, 11, 23, 53197

Why are those the prime factors of the number 215,341,456?

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 215,341,456

215,341,456
Factor Arrows
2107,670,728
Factor Arrows
253,835,364
Factor Arrows
226,917,682
Factor Arrows
213,458,841
Factor Arrows
111,223,531
Factor Arrows
2353,197

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, 11, 23, 53197

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 23 x 53,197 = 215,341,456

This can also be written as 24 x 111 x 231 x 53,1971 = 215,341,456

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


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