Q: What are the prime factors of the number 4,387,680?

 A: 2, 3, 5, 11, 277

Why are those the prime factors of the number 4,387,680?

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 4,387,680

4,387,680
Factor Arrows
22,193,840
Factor Arrows
21,096,920
Factor Arrows
2548,460
Factor Arrows
2274,230
Factor Arrows
2137,115
Factor Arrows
345,705
Factor Arrows
315,235
Factor Arrows
53,047
Factor Arrows
11277

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, 11, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 11 x 277 = 4,387,680

This can also be written as 25 x 32 x 51 x 111 x 2771 = 4,387,680

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


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