Q: What are the prime factors of the number 16,134,400?

 A: 2, 5, 2521

Why are those the prime factors of the number 16,134,400?

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 16,134,400

16,134,400
Factor Arrows
28,067,200
Factor Arrows
24,033,600
Factor Arrows
22,016,800
Factor Arrows
21,008,400
Factor Arrows
2504,200
Factor Arrows
2252,100
Factor Arrows
2126,050
Factor Arrows
263,025
Factor Arrows
512,605
Factor Arrows
52,521

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, 5, 2521

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 5 x 5 x 2,521 = 16,134,400

This can also be written as 28 x 52 x 2,5211 = 16,134,400

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


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