Q: What are the prime factors of the number 4,217,500?

 A: 2, 5, 7, 241

Why are those the prime factors of the number 4,217,500?

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 4,217,500

4,217,500
Factor Arrows
22,108,750
Factor Arrows
21,054,375
Factor Arrows
5210,875
Factor Arrows
542,175
Factor Arrows
58,435
Factor Arrows
51,687
Factor Arrows
7241

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, 5, 7, 241

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 5 x 7 x 241 = 4,217,500

This can also be written as 22 x 54 x 71 x 2411 = 4,217,500

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


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