Q: What are the prime factors of the number 243,541,354?

 A: 2, 7, 17, 19, 53857

Why are those the prime factors of the number 243,541,354?

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 243,541,354

243,541,354
Factor Arrows
2121,770,677
Factor Arrows
717,395,811
Factor Arrows
171,023,283
Factor Arrows
1953,857

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, 7, 17, 19, 53857

We can check our work by multiplying all of the prime factors together: 2 x 7 x 17 x 19 x 53,857 = 243,541,354

This can also be written as 21 x 71 x 171 x 191 x 53,8571 = 243,541,354

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


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