Q: What are the prime factors of the number 254,554,432?

 A: 2, 11, 23, 79, 199

Why are those the prime factors of the number 254,554,432?

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 254,554,432

254,554,432
Factor Arrows
2127,277,216
Factor Arrows
263,638,608
Factor Arrows
231,819,304
Factor Arrows
215,909,652
Factor Arrows
27,954,826
Factor Arrows
23,977,413
Factor Arrows
11361,583
Factor Arrows
2315,721
Factor Arrows
79199

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, 11, 23, 79, 199

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 11 x 23 x 79 x 199 = 254,554,432

This can also be written as 26 x 111 x 231 x 791 x 1991 = 254,554,432

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


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