Q: What are the prime factors of the number 87,630,144?

 A: 2, 3, 7, 113, 577

Why are those the prime factors of the number 87,630,144?

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 87,630,144

87,630,144
Factor Arrows
243,815,072
Factor Arrows
221,907,536
Factor Arrows
210,953,768
Factor Arrows
25,476,884
Factor Arrows
22,738,442
Factor Arrows
21,369,221
Factor Arrows
3456,407
Factor Arrows
765,201
Factor Arrows
113577

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, 7, 113, 577

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 113 x 577 = 87,630,144

This can also be written as 26 x 31 x 71 x 1131 x 5771 = 87,630,144

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


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