Q: What are the prime factors of the number 162,644,640?

 A: 2, 3, 5, 167, 2029

Why are those the prime factors of the number 162,644,640?

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 162,644,640

162,644,640
Factor Arrows
281,322,320
Factor Arrows
240,661,160
Factor Arrows
220,330,580
Factor Arrows
210,165,290
Factor Arrows
25,082,645
Factor Arrows
31,694,215
Factor Arrows
5338,843
Factor Arrows
1672,029

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, 167, 2029

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 5 x 167 x 2,029 = 162,644,640

This can also be written as 25 x 31 x 51 x 1671 x 2,0291 = 162,644,640

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


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