Q: What are the prime factors of the number 85,527,904?

 A: 2, 7, 11, 103, 337

Why are those the prime factors of the number 85,527,904?

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 85,527,904

85,527,904
Factor Arrows
242,763,952
Factor Arrows
221,381,976
Factor Arrows
210,690,988
Factor Arrows
25,345,494
Factor Arrows
22,672,747
Factor Arrows
7381,821
Factor Arrows
1134,711
Factor Arrows
103337

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, 7, 11, 103, 337

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 11 x 103 x 337 = 85,527,904

This can also be written as 25 x 71 x 111 x 1031 x 3371 = 85,527,904

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


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