Q: What are the prime factors of the number 4,362,880?

 A: 2, 5, 17, 401

Why are those the prime factors of the number 4,362,880?

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 4,362,880

4,362,880
Factor Arrows
22,181,440
Factor Arrows
21,090,720
Factor Arrows
2545,360
Factor Arrows
2272,680
Factor Arrows
2136,340
Factor Arrows
268,170
Factor Arrows
234,085
Factor Arrows
56,817
Factor Arrows
17401

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, 401

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 5 x 17 x 401 = 4,362,880

This can also be written as 27 x 51 x 171 x 4011 = 4,362,880

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


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