Q: What are the prime factors of the number 166,153,632?

 A: 2, 3, 19, 71, 1283

Why are those the prime factors of the number 166,153,632?

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 166,153,632

166,153,632
Factor Arrows
283,076,816
Factor Arrows
241,538,408
Factor Arrows
220,769,204
Factor Arrows
210,384,602
Factor Arrows
25,192,301
Factor Arrows
31,730,767
Factor Arrows
1991,093
Factor Arrows
711,283

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, 3, 19, 71, 1283

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 19 x 71 x 1,283 = 166,153,632

This can also be written as 25 x 31 x 191 x 711 x 1,2831 = 166,153,632

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


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