Q: What are the prime factors of the number 109,775,904?

 A: 2, 3, 7, 29, 43, 131

Why are those the prime factors of the number 109,775,904?

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 109,775,904

109,775,904
Factor Arrows
254,887,952
Factor Arrows
227,443,976
Factor Arrows
213,721,988
Factor Arrows
26,860,994
Factor Arrows
23,430,497
Factor Arrows
31,143,499
Factor Arrows
7163,357
Factor Arrows
295,633
Factor Arrows
43131

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, 7, 29, 43, 131

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 7 x 29 x 43 x 131 = 109,775,904

This can also be written as 25 x 31 x 71 x 291 x 431 x 1311 = 109,775,904

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


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