Q: What are the prime factors of the number 221,043,336?

 A: 2, 3, 29, 317591

Why are those the prime factors of the number 221,043,336?

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 221,043,336

221,043,336
Factor Arrows
2110,521,668
Factor Arrows
255,260,834
Factor Arrows
227,630,417
Factor Arrows
39,210,139
Factor Arrows
29317,591

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, 29, 317591

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 29 x 317,591 = 221,043,336

This can also be written as 23 x 31 x 291 x 317,5911 = 221,043,336

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


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