Q: What are the prime factors of the number 86,146,608?

 A: 2, 3, 19, 59, 1601

Why are those the prime factors of the number 86,146,608?

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 86,146,608

86,146,608
Factor Arrows
243,073,304
Factor Arrows
221,536,652
Factor Arrows
210,768,326
Factor Arrows
25,384,163
Factor Arrows
31,794,721
Factor Arrows
1994,459
Factor Arrows
591,601

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, 19, 59, 1601

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 19 x 59 x 1,601 = 86,146,608

This can also be written as 24 x 31 x 191 x 591 x 1,6011 = 86,146,608

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


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