Q: What are the prime factors of the number 23,202,816?

 A: 2, 3, 7, 13, 83

Why are those the prime factors of the number 23,202,816?

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 23,202,816

23,202,816
Factor Arrows
211,601,408
Factor Arrows
25,800,704
Factor Arrows
22,900,352
Factor Arrows
21,450,176
Factor Arrows
2725,088
Factor Arrows
2362,544
Factor Arrows
2181,272
Factor Arrows
290,636
Factor Arrows
245,318
Factor Arrows
222,659
Factor Arrows
37,553
Factor Arrows
71,079
Factor Arrows
1383

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, 13, 83

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 3 x 7 x 13 x 83 = 23,202,816

This can also be written as 210 x 31 x 71 x 131 x 831 = 23,202,816

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


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