Q: What are the prime factors of the number 23,217,000?

 A: 2, 3, 5, 71, 109

Why are those the prime factors of the number 23,217,000?

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 23,217,000

23,217,000
Factor Arrows
211,608,500
Factor Arrows
25,804,250
Factor Arrows
22,902,125
Factor Arrows
3967,375
Factor Arrows
5193,475
Factor Arrows
538,695
Factor Arrows
57,739
Factor Arrows
71109

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, 71, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 5 x 71 x 109 = 23,217,000

This can also be written as 23 x 31 x 53 x 711 x 1091 = 23,217,000

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


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