Q: What are the prime factors of the number 103,456?

 A: 2, 53, 61

Why are those the prime factors of the number 103,456?

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 103,456

103,456
Factor Arrows
251,728
Factor Arrows
225,864
Factor Arrows
212,932
Factor Arrows
26,466
Factor Arrows
23,233
Factor Arrows
5361

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, 53, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 53 x 61 = 103,456

This can also be written as 25 x 531 x 611 = 103,456

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


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