Q: What are the prime factors of the number 22,148,172?

 A: 2, 3, 23, 1163

Why are those the prime factors of the number 22,148,172?

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 22,148,172

22,148,172
Factor Arrows
211,074,086
Factor Arrows
25,537,043
Factor Arrows
31,845,681
Factor Arrows
3615,227
Factor Arrows
2326,749
Factor Arrows
231,163

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, 23, 1163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 23 x 23 x 1,163 = 22,148,172

This can also be written as 22 x 32 x 232 x 1,1631 = 22,148,172

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


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