Q: What are the prime factors of the number 4,503,640?

 A: 2, 5, 17, 37, 179

Why are those the prime factors of the number 4,503,640?

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 4,503,640

4,503,640
Factor Arrows
22,251,820
Factor Arrows
21,125,910
Factor Arrows
2562,955
Factor Arrows
5112,591
Factor Arrows
176,623
Factor Arrows
37179

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, 17, 37, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17 x 37 x 179 = 4,503,640

This can also be written as 23 x 51 x 171 x 371 x 1791 = 4,503,640

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


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