Q: What are the prime factors of the number 16,380,144?

 A: 2, 3, 11, 383

Why are those the prime factors of the number 16,380,144?

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 16,380,144

16,380,144
Factor Arrows
28,190,072
Factor Arrows
24,095,036
Factor Arrows
22,047,518
Factor Arrows
21,023,759
Factor Arrows
3341,253
Factor Arrows
3113,751
Factor Arrows
337,917
Factor Arrows
312,639
Factor Arrows
34,213
Factor Arrows
11383

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, 383

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 383 = 16,380,144

This can also be written as 24 x 35 x 111 x 3831 = 16,380,144

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


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