Q: What are the prime factors of the number 85,574,043?

 A: 3, 19, 31, 5381

Why are those the prime factors of the number 85,574,043?

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 85,574,043

85,574,043
Factor Arrows
328,524,681
Factor Arrows
39,508,227
Factor Arrows
33,169,409
Factor Arrows
19166,811
Factor Arrows
315,381

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, 19, 31, 5381

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 19 x 31 x 5,381 = 85,574,043

This can also be written as 33 x 191 x 311 x 5,3811 = 85,574,043

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


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