Q: What are the prime factors of the number 23,542,400?

 A: 2, 5, 7, 1051

Why are those the prime factors of the number 23,542,400?

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 23,542,400

23,542,400
Factor Arrows
211,771,200
Factor Arrows
25,885,600
Factor Arrows
22,942,800
Factor Arrows
21,471,400
Factor Arrows
2735,700
Factor Arrows
2367,850
Factor Arrows
2183,925
Factor Arrows
536,785
Factor Arrows
57,357
Factor Arrows
71,051

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, 1051

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 1,051 = 23,542,400

This can also be written as 27 x 52 x 71 x 1,0511 = 23,542,400

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


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