Q: What are the prime factors of the number 86,447,235?

 A: 3, 5, 7, 173, 4759

Why are those the prime factors of the number 86,447,235?

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 86,447,235

86,447,235
Factor Arrows
328,815,745
Factor Arrows
55,763,149
Factor Arrows
7823,307
Factor Arrows
1734,759

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:

3, 5, 7, 173, 4759

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 173 x 4,759 = 86,447,235

This can also be written as 31 x 51 x 71 x 1731 x 4,7591 = 86,447,235

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


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