Q: What are the prime factors of the number 254,561,024?

 A: 2, 47, 21157

Why are those the prime factors of the number 254,561,024?

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 254,561,024

254,561,024
Factor Arrows
2127,280,512
Factor Arrows
263,640,256
Factor Arrows
231,820,128
Factor Arrows
215,910,064
Factor Arrows
27,955,032
Factor Arrows
23,977,516
Factor Arrows
21,988,758
Factor Arrows
2994,379
Factor Arrows
4721,157

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, 47, 21157

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 2 x 47 x 21,157 = 254,561,024

This can also be written as 28 x 471 x 21,1571 = 254,561,024

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


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