Q: What are the prime factors of the number 16,203,264?

 A: 2, 3, 7, 11, 137

Why are those the prime factors of the number 16,203,264?

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 16,203,264

16,203,264
Factor Arrows
28,101,632
Factor Arrows
24,050,816
Factor Arrows
22,025,408
Factor Arrows
21,012,704
Factor Arrows
2506,352
Factor Arrows
2253,176
Factor Arrows
2126,588
Factor Arrows
263,294
Factor Arrows
231,647
Factor Arrows
310,549
Factor Arrows
71,507
Factor Arrows
11137

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, 7, 11, 137

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 2 x 3 x 7 x 11 x 137 = 16,203,264

This can also be written as 29 x 31 x 71 x 111 x 1371 = 16,203,264

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


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