Q: What are the prime factors of the number 151,232?

 A: 2, 17, 139

Why are those the prime factors of the number 151,232?

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 151,232

151,232
Factor Arrows
275,616
Factor Arrows
237,808
Factor Arrows
218,904
Factor Arrows
29,452
Factor Arrows
24,726
Factor Arrows
22,363
Factor Arrows
17139

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, 17, 139

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 17 x 139 = 151,232

This can also be written as 26 x 171 x 1391 = 151,232

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


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