Q: What are the prime factors of the number 67,500,000?

 A: 2, 3, 5

Why are those the prime factors of the number 67,500,000?

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 67,500,000

67,500,000
Factor Arrows
233,750,000
Factor Arrows
216,875,000
Factor Arrows
28,437,500
Factor Arrows
24,218,750
Factor Arrows
22,109,375
Factor Arrows
3703,125
Factor Arrows
3234,375
Factor Arrows
378,125
Factor Arrows
515,625
Factor Arrows
53,125
Factor Arrows
5625
Factor Arrows
5125
Factor Arrows
525
Factor Arrows
55

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

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 3 x 5 x 5 x 5 x 5 x 5 x 5 x 5 = 67,500,000

This can also be written as 25 x 33 x 57 = 67,500,000

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


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