Q: What are the prime factors of the number 2,235,240?

 A: 2, 3, 5, 7, 887

Why are those the prime factors of the number 2,235,240?

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 2,235,240

2,235,240
Factor Arrows
21,117,620
Factor Arrows
2558,810
Factor Arrows
2279,405
Factor Arrows
393,135
Factor Arrows
331,045
Factor Arrows
56,209
Factor Arrows
7887

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, 7, 887

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 7 x 887 = 2,235,240

This can also be written as 23 x 32 x 51 x 71 x 8871 = 2,235,240

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


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