Q: What are the prime factors of the number 118,543,320?

 A: 2, 3, 5, 7, 47041

Why are those the prime factors of the number 118,543,320?

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 118,543,320

118,543,320
Factor Arrows
259,271,660
Factor Arrows
229,635,830
Factor Arrows
214,817,915
Factor Arrows
34,939,305
Factor Arrows
31,646,435
Factor Arrows
5329,287
Factor Arrows
747,041

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, 47041

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 7 x 47,041 = 118,543,320

This can also be written as 23 x 32 x 51 x 71 x 47,0411 = 118,543,320

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


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