Q: What are the prime factors of the number 215,555,344?

 A: 2, 311, 43319

Why are those the prime factors of the number 215,555,344?

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 215,555,344

215,555,344
Factor Arrows
2107,777,672
Factor Arrows
253,888,836
Factor Arrows
226,944,418
Factor Arrows
213,472,209
Factor Arrows
31143,319

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, 311, 43319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 311 x 43,319 = 215,555,344

This can also be written as 24 x 3111 x 43,3191 = 215,555,344

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


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