Q: What are the prime factors of the number 178,838,128?

 A: 2, 7, 29, 55061

Why are those the prime factors of the number 178,838,128?

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 178,838,128

178,838,128
Factor Arrows
289,419,064
Factor Arrows
244,709,532
Factor Arrows
222,354,766
Factor Arrows
211,177,383
Factor Arrows
71,596,769
Factor Arrows
2955,061

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, 7, 29, 55061

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 29 x 55,061 = 178,838,128

This can also be written as 24 x 71 x 291 x 55,0611 = 178,838,128

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


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