Q: What are the prime factors of the number 254,421,540?

 A: 2, 3, 5, 43, 10957

Why are those the prime factors of the number 254,421,540?

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 254,421,540

254,421,540
Factor Arrows
2127,210,770
Factor Arrows
263,605,385
Factor Arrows
321,201,795
Factor Arrows
37,067,265
Factor Arrows
32,355,755
Factor Arrows
5471,151
Factor Arrows
4310,957

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, 43, 10957

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 43 x 10,957 = 254,421,540

This can also be written as 22 x 33 x 51 x 431 x 10,9571 = 254,421,540

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


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