Q: What are the prime factors of the number 166,253,520?

 A: 2, 3, 5, 29, 23887

Why are those the prime factors of the number 166,253,520?

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 166,253,520

166,253,520
Factor Arrows
283,126,760
Factor Arrows
241,563,380
Factor Arrows
220,781,690
Factor Arrows
210,390,845
Factor Arrows
33,463,615
Factor Arrows
5692,723
Factor Arrows
2923,887

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, 5, 29, 23887

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 29 x 23,887 = 166,253,520

This can also be written as 24 x 31 x 51 x 291 x 23,8871 = 166,253,520

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


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