Q: What are the prime factors of the number 16,402,560?

 A: 2, 3, 5, 8543

Why are those the prime factors of the number 16,402,560?

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 16,402,560

16,402,560
Factor Arrows
28,201,280
Factor Arrows
24,100,640
Factor Arrows
22,050,320
Factor Arrows
21,025,160
Factor Arrows
2512,580
Factor Arrows
2256,290
Factor Arrows
2128,145
Factor Arrows
342,715
Factor Arrows
58,543

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, 8543

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 3 x 5 x 8,543 = 16,402,560

This can also be written as 27 x 31 x 51 x 8,5431 = 16,402,560

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


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