Q: What are the prime factors of the number 22,030,400?

 A: 2, 5, 7, 281

Why are those the prime factors of the number 22,030,400?

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 22,030,400

22,030,400
Factor Arrows
211,015,200
Factor Arrows
25,507,600
Factor Arrows
22,753,800
Factor Arrows
21,376,900
Factor Arrows
2688,450
Factor Arrows
2344,225
Factor Arrows
568,845
Factor Arrows
513,769
Factor Arrows
71,967
Factor Arrows
7281

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, 281

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 5 x 5 x 7 x 7 x 281 = 22,030,400

This can also be written as 26 x 52 x 72 x 2811 = 22,030,400

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


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