Q: What are the prime factors of the number 83,130,872?

 A: 2, 11, 157, 547

Why are those the prime factors of the number 83,130,872?

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 83,130,872

83,130,872
Factor Arrows
241,565,436
Factor Arrows
220,782,718
Factor Arrows
210,391,359
Factor Arrows
11944,669
Factor Arrows
1185,879
Factor Arrows
157547

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, 11, 157, 547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 11 x 157 x 547 = 83,130,872

This can also be written as 23 x 112 x 1571 x 5471 = 83,130,872

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


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