Q: What are the prime factors of the number 446,985?

 A: 3, 5, 7, 11, 43

Why are those the prime factors of the number 446,985?

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 446,985

446,985
Factor Arrows
3148,995
Factor Arrows
349,665
Factor Arrows
316,555
Factor Arrows
53,311
Factor Arrows
7473
Factor Arrows
1143

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:

3, 5, 7, 11, 43

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 7 x 11 x 43 = 446,985

This can also be written as 33 x 51 x 71 x 111 x 431 = 446,985

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


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