Q: What are the prime factors of the number 254,053,440?

 A: 2, 3, 5, 17, 5189

Why are those the prime factors of the number 254,053,440?

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 254,053,440

254,053,440
Factor Arrows
2127,026,720
Factor Arrows
263,513,360
Factor Arrows
231,756,680
Factor Arrows
215,878,340
Factor Arrows
27,939,170
Factor Arrows
23,969,585
Factor Arrows
31,323,195
Factor Arrows
3441,065
Factor Arrows
588,213
Factor Arrows
175,189

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, 17, 5189

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 3 x 3 x 5 x 17 x 5,189 = 254,053,440

This can also be written as 26 x 32 x 51 x 171 x 5,1891 = 254,053,440

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


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