Q: What are the prime factors of the number 22,710,400?

 A: 2, 5, 47, 151

Why are those the prime factors of the number 22,710,400?

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 22,710,400

22,710,400
Factor Arrows
211,355,200
Factor Arrows
25,677,600
Factor Arrows
22,838,800
Factor Arrows
21,419,400
Factor Arrows
2709,700
Factor Arrows
2354,850
Factor Arrows
2177,425
Factor Arrows
535,485
Factor Arrows
57,097
Factor Arrows
47151

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, 47, 151

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 47 x 151 = 22,710,400

This can also be written as 27 x 52 x 471 x 1511 = 22,710,400

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


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