Q: What are the prime factors of the number 104,013,312?

 A: 2, 3, 13, 5209

Why are those the prime factors of the number 104,013,312?

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 104,013,312

104,013,312
Factor Arrows
252,006,656
Factor Arrows
226,003,328
Factor Arrows
213,001,664
Factor Arrows
26,500,832
Factor Arrows
23,250,416
Factor Arrows
21,625,208
Factor Arrows
2812,604
Factor Arrows
2406,302
Factor Arrows
2203,151
Factor Arrows
367,717
Factor Arrows
135,209

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, 13, 5209

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 3 x 13 x 5,209 = 104,013,312

This can also be written as 29 x 31 x 131 x 5,2091 = 104,013,312

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


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