Q: What are the prime factors of the number 505,434,144?

 A: 2, 3, 83, 229, 277

Why are those the prime factors of the number 505,434,144?

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 505,434,144

505,434,144
Factor Arrows
2252,717,072
Factor Arrows
2126,358,536
Factor Arrows
263,179,268
Factor Arrows
231,589,634
Factor Arrows
215,794,817
Factor Arrows
35,264,939
Factor Arrows
8363,433
Factor Arrows
229277

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, 83, 229, 277

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 83 x 229 x 277 = 505,434,144

This can also be written as 25 x 31 x 831 x 2291 x 2771 = 505,434,144

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


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