Q: What are the prime factors of the number 221,510,352?

 A: 2, 3, 7, 29, 127, 179

Why are those the prime factors of the number 221,510,352?

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 221,510,352

221,510,352
Factor Arrows
2110,755,176
Factor Arrows
255,377,588
Factor Arrows
227,688,794
Factor Arrows
213,844,397
Factor Arrows
34,614,799
Factor Arrows
7659,257
Factor Arrows
2922,733
Factor Arrows
127179

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, 7, 29, 127, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 29 x 127 x 179 = 221,510,352

This can also be written as 24 x 31 x 71 x 291 x 1271 x 1791 = 221,510,352

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


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