Q: What are the prime factors of the number 118,058,720?

 A: 2, 5, 13, 211, 269

Why are those the prime factors of the number 118,058,720?

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 118,058,720

118,058,720
Factor Arrows
259,029,360
Factor Arrows
229,514,680
Factor Arrows
214,757,340
Factor Arrows
27,378,670
Factor Arrows
23,689,335
Factor Arrows
5737,867
Factor Arrows
1356,759
Factor Arrows
211269

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, 13, 211, 269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 13 x 211 x 269 = 118,058,720

This can also be written as 25 x 51 x 131 x 2111 x 2691 = 118,058,720

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


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