Q: What are the prime factors of the number 335,872?

 A: 2, 41

Why are those the prime factors of the number 335,872?

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 335,872

335,872
Factor Arrows
2167,936
Factor Arrows
283,968
Factor Arrows
241,984
Factor Arrows
220,992
Factor Arrows
210,496
Factor Arrows
25,248
Factor Arrows
22,624
Factor Arrows
21,312
Factor Arrows
2656
Factor Arrows
2328
Factor Arrows
2164
Factor Arrows
282
Factor Arrows
241

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, 41

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 2 x 2 x 2 x 2 x 2 x 2 x 41 = 335,872

This can also be written as 213 x 411 = 335,872

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


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