Q: What are the prime factors of the number 131,011,232?

 A: 2, 11, 19, 1031

Why are those the prime factors of the number 131,011,232?

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 131,011,232

131,011,232
Factor Arrows
265,505,616
Factor Arrows
232,752,808
Factor Arrows
216,376,404
Factor Arrows
28,188,202
Factor Arrows
24,094,101
Factor Arrows
11372,191
Factor Arrows
1919,589
Factor Arrows
191,031

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, 19, 1031

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 19 x 19 x 1,031 = 131,011,232

This can also be written as 25 x 111 x 192 x 1,0311 = 131,011,232

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


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