Q: What are the prime factors of the number 40,288?

 A: 2, 1259

Why are those the prime factors of the number 40,288?

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 40,288

40,288
Factor Arrows
220,144
Factor Arrows
210,072
Factor Arrows
25,036
Factor Arrows
22,518
Factor Arrows
21,259

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, 1259

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 1,259 = 40,288

This can also be written as 25 x 1,2591 = 40,288

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


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