Q: What are the prime factors of the number 16,821,014?

 A: 2, 7, 37, 4639

Why are those the prime factors of the number 16,821,014?

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 16,821,014

16,821,014
Factor Arrows
28,410,507
Factor Arrows
71,201,501
Factor Arrows
7171,643
Factor Arrows
374,639

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, 7, 37, 4639

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 37 x 4,639 = 16,821,014

This can also be written as 21 x 72 x 371 x 4,6391 = 16,821,014

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


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