Q: What are the prime factors of the number 5,622,400?

 A: 2, 5, 7, 251

Why are those the prime factors of the number 5,622,400?

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 5,622,400

5,622,400
Factor Arrows
22,811,200
Factor Arrows
21,405,600
Factor Arrows
2702,800
Factor Arrows
2351,400
Factor Arrows
2175,700
Factor Arrows
287,850
Factor Arrows
243,925
Factor Arrows
58,785
Factor Arrows
51,757
Factor Arrows
7251

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, 7, 251

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 5 x 7 x 251 = 5,622,400

This can also be written as 27 x 52 x 71 x 2511 = 5,622,400

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


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