Q: What are the prime factors of the number 254,117,472?

 A: 2, 3, 7, 378151

Why are those the prime factors of the number 254,117,472?

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 254,117,472

254,117,472
Factor Arrows
2127,058,736
Factor Arrows
263,529,368
Factor Arrows
231,764,684
Factor Arrows
215,882,342
Factor Arrows
27,941,171
Factor Arrows
32,647,057
Factor Arrows
7378,151

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, 7, 378151

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 7 x 378,151 = 254,117,472

This can also be written as 25 x 31 x 71 x 378,1511 = 254,117,472

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


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