Q: What are the prime factors of the number 87,768,702?

 A: 2, 3, 7, 191, 521

Why are those the prime factors of the number 87,768,702?

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 87,768,702

87,768,702
Factor Arrows
243,884,351
Factor Arrows
314,628,117
Factor Arrows
34,876,039
Factor Arrows
7696,577
Factor Arrows
799,511
Factor Arrows
191521

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, 191, 521

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 7 x 191 x 521 = 87,768,702

This can also be written as 21 x 32 x 72 x 1911 x 5211 = 87,768,702

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


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