Q: What are the prime factors of the number 118,728,750?

 A: 2, 3, 5, 7, 4523

Why are those the prime factors of the number 118,728,750?

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 118,728,750

118,728,750
Factor Arrows
259,364,375
Factor Arrows
319,788,125
Factor Arrows
53,957,625
Factor Arrows
5791,525
Factor Arrows
5158,305
Factor Arrows
531,661
Factor Arrows
74,523

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, 7, 4523

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 5 x 5 x 7 x 4,523 = 118,728,750

This can also be written as 21 x 31 x 54 x 71 x 4,5231 = 118,728,750

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


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