Q: What are the prime factors of the number 356,928?

 A: 2, 3, 11, 13

Why are those the prime factors of the number 356,928?

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 356,928

356,928
Factor Arrows
2178,464
Factor Arrows
289,232
Factor Arrows
244,616
Factor Arrows
222,308
Factor Arrows
211,154
Factor Arrows
25,577
Factor Arrows
31,859
Factor Arrows
11169
Factor Arrows
1313

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, 3, 11, 13

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 3 x 11 x 13 x 13 = 356,928

This can also be written as 26 x 31 x 111 x 132 = 356,928

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


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