Q: What are the prime factors of the number 16,722,288?

 A: 2, 3, 11, 17, 23

Why are those the prime factors of the number 16,722,288?

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 16,722,288

16,722,288
Factor Arrows
28,361,144
Factor Arrows
24,180,572
Factor Arrows
22,090,286
Factor Arrows
21,045,143
Factor Arrows
3348,381
Factor Arrows
3116,127
Factor Arrows
338,709
Factor Arrows
312,903
Factor Arrows
34,301
Factor Arrows
11391
Factor Arrows
1723

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, 11, 17, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 11 x 17 x 23 = 16,722,288

This can also be written as 24 x 35 x 111 x 171 x 231 = 16,722,288

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


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