Q: What are the prime factors of the number 87,771,850?

 A: 2, 5, 17, 31, 3331

Why are those the prime factors of the number 87,771,850?

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 87,771,850

87,771,850
Factor Arrows
243,885,925
Factor Arrows
58,777,185
Factor Arrows
51,755,437
Factor Arrows
17103,261
Factor Arrows
313,331

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, 5, 17, 31, 3331

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 17 x 31 x 3,331 = 87,771,850

This can also be written as 21 x 52 x 171 x 311 x 3,3311 = 87,771,850

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


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