Q: What are the prime factors of the number 16,211,312?

 A: 2, 13, 59, 1321

Why are those the prime factors of the number 16,211,312?

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 16,211,312

16,211,312
Factor Arrows
28,105,656
Factor Arrows
24,052,828
Factor Arrows
22,026,414
Factor Arrows
21,013,207
Factor Arrows
1377,939
Factor Arrows
591,321

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, 13, 59, 1321

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 59 x 1,321 = 16,211,312

This can also be written as 24 x 131 x 591 x 1,3211 = 16,211,312

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


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