Q: What are the prime factors of the number 131,877,020?

 A: 2, 5, 11, 331, 1811

Why are those the prime factors of the number 131,877,020?

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 131,877,020

131,877,020
Factor Arrows
265,938,510
Factor Arrows
232,969,255
Factor Arrows
56,593,851
Factor Arrows
11599,441
Factor Arrows
3311,811

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, 5, 11, 331, 1811

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 331 x 1,811 = 131,877,020

This can also be written as 22 x 51 x 111 x 3311 x 1,8111 = 131,877,020

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


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