Q: What are the prime factors of the number 501,072?

 A: 2, 3, 11, 13, 73

Why are those the prime factors of the number 501,072?

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 501,072

501,072
Factor Arrows
2250,536
Factor Arrows
2125,268
Factor Arrows
262,634
Factor Arrows
231,317
Factor Arrows
310,439
Factor Arrows
11949
Factor Arrows
1373

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, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 13 x 73 = 501,072

This can also be written as 24 x 31 x 111 x 131 x 731 = 501,072

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


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