Q: What are the prime factors of the number 85,768,344?

 A: 2, 3, 443, 2689

Why are those the prime factors of the number 85,768,344?

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 85,768,344

85,768,344
Factor Arrows
242,884,172
Factor Arrows
221,442,086
Factor Arrows
210,721,043
Factor Arrows
33,573,681
Factor Arrows
31,191,227
Factor Arrows
4432,689

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, 443, 2689

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 443 x 2,689 = 85,768,344

This can also be written as 23 x 32 x 4431 x 2,6891 = 85,768,344

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


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