Q: What are the prime factors of the number 505,008?

 A: 2, 3, 7, 167

Why are those the prime factors of the number 505,008?

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 505,008

505,008
Factor Arrows
2252,504
Factor Arrows
2126,252
Factor Arrows
263,126
Factor Arrows
231,563
Factor Arrows
310,521
Factor Arrows
33,507
Factor Arrows
31,169
Factor Arrows
7167

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, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 7 x 167 = 505,008

This can also be written as 24 x 33 x 71 x 1671 = 505,008

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


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