Q: What are the prime factors of the number 87,236,028?

 A: 2, 3, 11, 41, 199

Why are those the prime factors of the number 87,236,028?

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 87,236,028

87,236,028
Factor Arrows
243,618,014
Factor Arrows
221,809,007
Factor Arrows
37,269,669
Factor Arrows
32,423,223
Factor Arrows
3807,741
Factor Arrows
3269,247
Factor Arrows
389,749
Factor Arrows
118,159
Factor Arrows
41199

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, 41, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 11 x 41 x 199 = 87,236,028

This can also be written as 22 x 35 x 111 x 411 x 1991 = 87,236,028

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


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