Q: What are the prime factors of the number 87,826,375?

 A: 5, 7, 13, 1103

Why are those the prime factors of the number 87,826,375?

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 87,826,375

87,826,375
Factor Arrows
517,565,275
Factor Arrows
53,513,055
Factor Arrows
5702,611
Factor Arrows
7100,373
Factor Arrows
714,339
Factor Arrows
131,103

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:

5, 7, 13, 1103

We can check our work by multiplying all of the prime factors together: 5 x 5 x 5 x 7 x 7 x 13 x 1,103 = 87,826,375

This can also be written as 53 x 72 x 131 x 1,1031 = 87,826,375

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


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