Q: What are the prime factors of the number 131,404,128?

 A: 2, 3, 1368793

Why are those the prime factors of the number 131,404,128?

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 131,404,128

131,404,128
Factor Arrows
265,702,064
Factor Arrows
232,851,032
Factor Arrows
216,425,516
Factor Arrows
28,212,758
Factor Arrows
24,106,379
Factor Arrows
31,368,793

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, 1368793

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 1,368,793 = 131,404,128

This can also be written as 25 x 31 x 1,368,7931 = 131,404,128

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


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