Q: What are the prime factors of the number 86,474,472?

 A: 2, 3, 7, 19, 27091

Why are those the prime factors of the number 86,474,472?

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 86,474,472

86,474,472
Factor Arrows
243,237,236
Factor Arrows
221,618,618
Factor Arrows
210,809,309
Factor Arrows
33,603,103
Factor Arrows
7514,729
Factor Arrows
1927,091

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, 19, 27091

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 19 x 27,091 = 86,474,472

This can also be written as 23 x 31 x 71 x 191 x 27,0911 = 86,474,472

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


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