Q: What are the prime factors of the number 254,664,505?

 A: 5, 17, 19, 137, 1151

Why are those the prime factors of the number 254,664,505?

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 254,664,505

254,664,505
Factor Arrows
550,932,901
Factor Arrows
172,996,053
Factor Arrows
19157,687
Factor Arrows
1371,151

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:

5, 17, 19, 137, 1151

We can check our work by multiplying all of the prime factors together: 5 x 17 x 19 x 137 x 1,151 = 254,664,505

This can also be written as 51 x 171 x 191 x 1371 x 1,1511 = 254,664,505

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


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