Q: What are the prime factors of the number 4,205,312?

 A: 2, 16427

Why are those the prime factors of the number 4,205,312?

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 4,205,312

4,205,312
Factor Arrows
22,102,656
Factor Arrows
21,051,328
Factor Arrows
2525,664
Factor Arrows
2262,832
Factor Arrows
2131,416
Factor Arrows
265,708
Factor Arrows
232,854
Factor Arrows
216,427

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, 16427

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 16,427 = 4,205,312

This can also be written as 28 x 16,4271 = 4,205,312

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


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