Q: What are the prime factors of the number 118,726,368?

 A: 2, 3, 17, 23, 3163

Why are those the prime factors of the number 118,726,368?

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 118,726,368

118,726,368
Factor Arrows
259,363,184
Factor Arrows
229,681,592
Factor Arrows
214,840,796
Factor Arrows
27,420,398
Factor Arrows
23,710,199
Factor Arrows
31,236,733
Factor Arrows
1772,749
Factor Arrows
233,163

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, 17, 23, 3163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 17 x 23 x 3,163 = 118,726,368

This can also be written as 25 x 31 x 171 x 231 x 3,1631 = 118,726,368

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


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