Q: What are the prime factors of the number 131,051,200?

 A: 2, 5, 7, 11701

Why are those the prime factors of the number 131,051,200?

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 131,051,200

131,051,200
Factor Arrows
265,525,600
Factor Arrows
232,762,800
Factor Arrows
216,381,400
Factor Arrows
28,190,700
Factor Arrows
24,095,350
Factor Arrows
22,047,675
Factor Arrows
5409,535
Factor Arrows
581,907
Factor Arrows
711,701

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, 7, 11701

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 11,701 = 131,051,200

This can also be written as 26 x 52 x 71 x 11,7011 = 131,051,200

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


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