Q: What are the prime factors of the number 87,218,868?

 A: 2, 3, 11, 223, 2963

Why are those the prime factors of the number 87,218,868?

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 87,218,868

87,218,868
Factor Arrows
243,609,434
Factor Arrows
221,804,717
Factor Arrows
37,268,239
Factor Arrows
11660,749
Factor Arrows
2232,963

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, 223, 2963

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 11 x 223 x 2,963 = 87,218,868

This can also be written as 22 x 31 x 111 x 2231 x 2,9631 = 87,218,868

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


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