Q: What are the prime factors of the number 22,289,472?

 A: 2, 3, 12899

Why are those the prime factors of the number 22,289,472?

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 22,289,472

22,289,472
Factor Arrows
211,144,736
Factor Arrows
25,572,368
Factor Arrows
22,786,184
Factor Arrows
21,393,092
Factor Arrows
2696,546
Factor Arrows
2348,273
Factor Arrows
3116,091
Factor Arrows
338,697
Factor Arrows
312,899

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, 12899

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 3 x 3 x 3 x 12,899 = 22,289,472

This can also be written as 26 x 33 x 12,8991 = 22,289,472

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


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