Q: What are the prime factors of the number 10,621,312?

 A: 2, 13, 491

Why are those the prime factors of the number 10,621,312?

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 10,621,312

10,621,312
Factor Arrows
25,310,656
Factor Arrows
22,655,328
Factor Arrows
21,327,664
Factor Arrows
2663,832
Factor Arrows
2331,916
Factor Arrows
2165,958
Factor Arrows
282,979
Factor Arrows
136,383
Factor Arrows
13491

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, 13, 491

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 13 x 13 x 491 = 10,621,312

This can also be written as 27 x 132 x 4911 = 10,621,312

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


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