Q: What are the prime factors of the number 22,212,216?

 A: 2, 3, 13, 19, 1249

Why are those the prime factors of the number 22,212,216?

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 22,212,216

22,212,216
Factor Arrows
211,106,108
Factor Arrows
25,553,054
Factor Arrows
22,776,527
Factor Arrows
3925,509
Factor Arrows
3308,503
Factor Arrows
1323,731
Factor Arrows
191,249

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, 13, 19, 1249

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 13 x 19 x 1,249 = 22,212,216

This can also be written as 23 x 32 x 131 x 191 x 1,2491 = 22,212,216

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


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