Q: What are the prime factors of the number 156,992?

 A: 2, 11, 223

Why are those the prime factors of the number 156,992?

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 156,992

156,992
Factor Arrows
278,496
Factor Arrows
239,248
Factor Arrows
219,624
Factor Arrows
29,812
Factor Arrows
24,906
Factor Arrows
22,453
Factor Arrows
11223

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, 11, 223

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 11 x 223 = 156,992

This can also be written as 26 x 111 x 2231 = 156,992

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


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