Q: What are the prime factors of the number 85,871,052?

 A: 2, 3, 23, 137, 757

Why are those the prime factors of the number 85,871,052?

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 85,871,052

85,871,052
Factor Arrows
242,935,526
Factor Arrows
221,467,763
Factor Arrows
37,155,921
Factor Arrows
32,385,307
Factor Arrows
23103,709
Factor Arrows
137757

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, 23, 137, 757

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 23 x 137 x 757 = 85,871,052

This can also be written as 22 x 32 x 231 x 1371 x 7571 = 85,871,052

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


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