Q: What are the prime factors of the number 42,004,500?

 A: 2, 3, 5, 41, 683

Why are those the prime factors of the number 42,004,500?

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 42,004,500

42,004,500
Factor Arrows
221,002,250
Factor Arrows
210,501,125
Factor Arrows
33,500,375
Factor Arrows
5700,075
Factor Arrows
5140,015
Factor Arrows
528,003
Factor Arrows
41683

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, 5, 41, 683

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 5 x 41 x 683 = 42,004,500

This can also be written as 22 x 31 x 53 x 411 x 6831 = 42,004,500

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


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