Q: What are the prime factors of the number 235,178,816?

 A: 2, 17, 216157

Why are those the prime factors of the number 235,178,816?

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 235,178,816

235,178,816
Factor Arrows
2117,589,408
Factor Arrows
258,794,704
Factor Arrows
229,397,352
Factor Arrows
214,698,676
Factor Arrows
27,349,338
Factor Arrows
23,674,669
Factor Arrows
17216,157

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, 17, 216157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 17 x 216,157 = 235,178,816

This can also be written as 26 x 171 x 216,1571 = 235,178,816

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


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