Q: What are the prime factors of the number 356,864?

 A: 2, 17, 41

Why are those the prime factors of the number 356,864?

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 356,864

356,864
Factor Arrows
2178,432
Factor Arrows
289,216
Factor Arrows
244,608
Factor Arrows
222,304
Factor Arrows
211,152
Factor Arrows
25,576
Factor Arrows
22,788
Factor Arrows
21,394
Factor Arrows
2697
Factor Arrows
1741

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, 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 17 x 41 = 356,864

This can also be written as 29 x 171 x 411 = 356,864

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


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