Q: What are the prime factors of the number 131,212,320?

 A: 2, 3, 5, 273359

Why are those the prime factors of the number 131,212,320?

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 131,212,320

131,212,320
Factor Arrows
265,606,160
Factor Arrows
232,803,080
Factor Arrows
216,401,540
Factor Arrows
28,200,770
Factor Arrows
24,100,385
Factor Arrows
31,366,795
Factor Arrows
5273,359

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, 5, 273359

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 273,359 = 131,212,320

This can also be written as 25 x 31 x 51 x 273,3591 = 131,212,320

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


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