Q: What are the prime factors of the number 118,404,286?

 A: 2, 7, 11, 13, 17, 71

Why are those the prime factors of the number 118,404,286?

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 118,404,286

118,404,286
Factor Arrows
259,202,143
Factor Arrows
78,457,449
Factor Arrows
71,208,207
Factor Arrows
7172,601
Factor Arrows
1115,691
Factor Arrows
131,207
Factor Arrows
1771

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, 7, 11, 13, 17, 71

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 7 x 11 x 13 x 17 x 71 = 118,404,286

This can also be written as 21 x 73 x 111 x 131 x 171 x 711 = 118,404,286

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


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