Q: What are the prime factors of the number 221,201,212?

 A: 2, 17, 23, 29, 4877

Why are those the prime factors of the number 221,201,212?

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 221,201,212

221,201,212
Factor Arrows
2110,600,606
Factor Arrows
255,300,303
Factor Arrows
173,252,959
Factor Arrows
23141,433
Factor Arrows
294,877

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, 17, 23, 29, 4877

We can check our work by multiplying all of the prime factors together: 2 x 2 x 17 x 23 x 29 x 4,877 = 221,201,212

This can also be written as 22 x 171 x 231 x 291 x 4,8771 = 221,201,212

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


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