Q: What are the prime factors of the number 243,152,000?

 A: 2, 5, 7, 13, 167

Why are those the prime factors of the number 243,152,000?

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 243,152,000

243,152,000
Factor Arrows
2121,576,000
Factor Arrows
260,788,000
Factor Arrows
230,394,000
Factor Arrows
215,197,000
Factor Arrows
27,598,500
Factor Arrows
23,799,250
Factor Arrows
21,899,625
Factor Arrows
5379,925
Factor Arrows
575,985
Factor Arrows
515,197
Factor Arrows
72,171
Factor Arrows
13167

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, 5, 7, 13, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 5 x 7 x 13 x 167 = 243,152,000

This can also be written as 27 x 53 x 71 x 131 x 1671 = 243,152,000

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


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