Q: What are the prime factors of the number 105,263,104?

 A: 2, 31, 829

Why are those the prime factors of the number 105,263,104?

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 105,263,104

105,263,104
Factor Arrows
252,631,552
Factor Arrows
226,315,776
Factor Arrows
213,157,888
Factor Arrows
26,578,944
Factor Arrows
23,289,472
Factor Arrows
21,644,736
Factor Arrows
2822,368
Factor Arrows
2411,184
Factor Arrows
2205,592
Factor Arrows
2102,796
Factor Arrows
251,398
Factor Arrows
225,699
Factor Arrows
31829

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, 31, 829

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 31 x 829 = 105,263,104

This can also be written as 212 x 311 x 8291 = 105,263,104

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


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