Q: What are the prime factors of the number 87,378,832?

 A: 2, 31, 113, 1559

Why are those the prime factors of the number 87,378,832?

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 87,378,832

87,378,832
Factor Arrows
243,689,416
Factor Arrows
221,844,708
Factor Arrows
210,922,354
Factor Arrows
25,461,177
Factor Arrows
31176,167
Factor Arrows
1131,559

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, 31, 113, 1559

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 31 x 113 x 1,559 = 87,378,832

This can also be written as 24 x 311 x 1131 x 1,5591 = 87,378,832

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


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