Q: What are the prime factors of the number 13,413,312?

 A: 2, 3, 11, 29, 73

Why are those the prime factors of the number 13,413,312?

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 13,413,312

13,413,312
Factor Arrows
26,706,656
Factor Arrows
23,353,328
Factor Arrows
21,676,664
Factor Arrows
2838,332
Factor Arrows
2419,166
Factor Arrows
2209,583
Factor Arrows
369,861
Factor Arrows
323,287
Factor Arrows
112,117
Factor Arrows
2973

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, 29, 73

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 3 x 3 x 11 x 29 x 73 = 13,413,312

This can also be written as 26 x 32 x 111 x 291 x 731 = 13,413,312

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


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