Q: What are the prime factors of the number 221,212,352?

 A: 2, 61, 56663

Why are those the prime factors of the number 221,212,352?

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 221,212,352

221,212,352
Factor Arrows
2110,606,176
Factor Arrows
255,303,088
Factor Arrows
227,651,544
Factor Arrows
213,825,772
Factor Arrows
26,912,886
Factor Arrows
23,456,443
Factor Arrows
6156,663

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, 61, 56663

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 61 x 56,663 = 221,212,352

This can also be written as 26 x 611 x 56,6631 = 221,212,352

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


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