Q: What are the prime factors of the number 105,768,234?

 A: 2, 3, 11, 13, 13697

Why are those the prime factors of the number 105,768,234?

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 105,768,234

105,768,234
Factor Arrows
252,884,117
Factor Arrows
317,628,039
Factor Arrows
35,876,013
Factor Arrows
31,958,671
Factor Arrows
11178,061
Factor Arrows
1313,697

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, 11, 13, 13697

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 11 x 13 x 13,697 = 105,768,234

This can also be written as 21 x 33 x 111 x 131 x 13,6971 = 105,768,234

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


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