Q: What are the prime factors of the number 1,896,000?

 A: 2, 3, 5, 79

Why are those the prime factors of the number 1,896,000?

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 1,896,000

1,896,000
Factor Arrows
2948,000
Factor Arrows
2474,000
Factor Arrows
2237,000
Factor Arrows
2118,500
Factor Arrows
259,250
Factor Arrows
229,625
Factor Arrows
39,875
Factor Arrows
51,975
Factor Arrows
5395
Factor Arrows
579

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, 79

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 3 x 5 x 5 x 5 x 79 = 1,896,000

This can also be written as 26 x 31 x 53 x 791 = 1,896,000

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


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