Q: What are the prime factors of the number 16,221,024?

 A: 2, 3, 151, 373

Why are those the prime factors of the number 16,221,024?

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 16,221,024

16,221,024
Factor Arrows
28,110,512
Factor Arrows
24,055,256
Factor Arrows
22,027,628
Factor Arrows
21,013,814
Factor Arrows
2506,907
Factor Arrows
3168,969
Factor Arrows
356,323
Factor Arrows
151373

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, 151, 373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 151 x 373 = 16,221,024

This can also be written as 25 x 32 x 1511 x 3731 = 16,221,024

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


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