Q: What are the prime factors of the number 243,131,550?

 A: 2, 3, 5, 563, 2879

Why are those the prime factors of the number 243,131,550?

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 243,131,550

243,131,550
Factor Arrows
2121,565,775
Factor Arrows
340,521,925
Factor Arrows
58,104,385
Factor Arrows
51,620,877
Factor Arrows
5632,879

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, 563, 2879

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 563 x 2,879 = 243,131,550

This can also be written as 21 x 31 x 52 x 5631 x 2,8791 = 243,131,550

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


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