Q: What are the prime factors of the number 178,119,856?

 A: 2, 29, 53, 7243

Why are those the prime factors of the number 178,119,856?

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 178,119,856

178,119,856
Factor Arrows
289,059,928
Factor Arrows
244,529,964
Factor Arrows
222,264,982
Factor Arrows
211,132,491
Factor Arrows
29383,879
Factor Arrows
537,243

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, 29, 53, 7243

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 29 x 53 x 7,243 = 178,119,856

This can also be written as 24 x 291 x 531 x 7,2431 = 178,119,856

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


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