Q: What are the prime factors of the number 16,171,500?

 A: 2, 3, 5, 10781

Why are those the prime factors of the number 16,171,500?

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 16,171,500

16,171,500
Factor Arrows
28,085,750
Factor Arrows
24,042,875
Factor Arrows
31,347,625
Factor Arrows
5269,525
Factor Arrows
553,905
Factor Arrows
510,781

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, 5, 10781

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 5 x 10,781 = 16,171,500

This can also be written as 22 x 31 x 53 x 10,7811 = 16,171,500

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


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