Q: What are the prime factors of the number 15,500,250?

 A: 2, 3, 5, 83

Why are those the prime factors of the number 15,500,250?

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 15,500,250

15,500,250
Factor Arrows
27,750,125
Factor Arrows
32,583,375
Factor Arrows
3861,125
Factor Arrows
5172,225
Factor Arrows
534,445
Factor Arrows
56,889
Factor Arrows
8383

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, 83

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 5 x 83 x 83 = 15,500,250

This can also be written as 21 x 32 x 53 x 832 = 15,500,250

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


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