Q: What are the prime factors of the number 131,204,400?

 A: 2, 3, 5, 31, 3527

Why are those the prime factors of the number 131,204,400?

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 131,204,400

131,204,400
Factor Arrows
265,602,200
Factor Arrows
232,801,100
Factor Arrows
216,400,550
Factor Arrows
28,200,275
Factor Arrows
32,733,425
Factor Arrows
5546,685
Factor Arrows
5109,337
Factor Arrows
313,527

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, 31, 3527

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 5 x 31 x 3,527 = 131,204,400

This can also be written as 24 x 31 x 52 x 311 x 3,5271 = 131,204,400

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


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