Q: What are the prime factors of the number 156,288?

 A: 2, 3, 11, 37

Why are those the prime factors of the number 156,288?

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 156,288

156,288
Factor Arrows
278,144
Factor Arrows
239,072
Factor Arrows
219,536
Factor Arrows
29,768
Factor Arrows
24,884
Factor Arrows
22,442
Factor Arrows
21,221
Factor Arrows
3407
Factor Arrows
1137

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, 11, 37

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 2 x 3 x 11 x 37 = 156,288

This can also be written as 27 x 31 x 111 x 371 = 156,288

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


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