Q: What are the prime factors of the number 103,744?

 A: 2, 1621

Why are those the prime factors of the number 103,744?

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 103,744

103,744
Factor Arrows
251,872
Factor Arrows
225,936
Factor Arrows
212,968
Factor Arrows
26,484
Factor Arrows
23,242
Factor Arrows
21,621

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, 1621

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 1,621 = 103,744

This can also be written as 26 x 1,6211 = 103,744

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


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