Q: What are the prime factors of the number 22,370,400?

 A: 2, 3, 5, 13, 239

Why are those the prime factors of the number 22,370,400?

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 22,370,400

22,370,400
Factor Arrows
211,185,200
Factor Arrows
25,592,600
Factor Arrows
22,796,300
Factor Arrows
21,398,150
Factor Arrows
2699,075
Factor Arrows
3233,025
Factor Arrows
377,675
Factor Arrows
515,535
Factor Arrows
53,107
Factor Arrows
13239

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, 3, 5, 13, 239

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 13 x 239 = 22,370,400

This can also be written as 25 x 32 x 52 x 131 x 2391 = 22,370,400

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


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