Q: What are the prime factors of the number 46,368?

 A: 2, 3, 7, 23

Why are those the prime factors of the number 46,368?

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 46,368

46,368
Factor Arrows
223,184
Factor Arrows
211,592
Factor Arrows
25,796
Factor Arrows
22,898
Factor Arrows
21,449
Factor Arrows
3483
Factor Arrows
3161
Factor Arrows
723

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, 7, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 23 = 46,368

This can also be written as 25 x 32 x 71 x 231 = 46,368

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


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