Q: What are the prime factors of the number 22,217,220?

 A: 2, 3, 5, 41143

Why are those the prime factors of the number 22,217,220?

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 22,217,220

22,217,220
Factor Arrows
211,108,610
Factor Arrows
25,554,305
Factor Arrows
31,851,435
Factor Arrows
3617,145
Factor Arrows
3205,715
Factor Arrows
541,143

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, 5, 41143

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 41,143 = 22,217,220

This can also be written as 22 x 33 x 51 x 41,1431 = 22,217,220

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


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