Q: What are the prime factors of the number 1,140,750?

 A: 2, 3, 5, 13

Why are those the prime factors of the number 1,140,750?

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 1,140,750

1,140,750
Factor Arrows
2570,375
Factor Arrows
3190,125
Factor Arrows
363,375
Factor Arrows
321,125
Factor Arrows
54,225
Factor Arrows
5845
Factor Arrows
5169
Factor Arrows
1313

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

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 5 x 5 x 13 x 13 = 1,140,750

This can also be written as 21 x 33 x 53 x 132 = 1,140,750

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


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