Q: What are the prime factors of the number 20,102,208?

 A: 2, 3, 7, 14957

Why are those the prime factors of the number 20,102,208?

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 20,102,208

20,102,208
Factor Arrows
210,051,104
Factor Arrows
25,025,552
Factor Arrows
22,512,776
Factor Arrows
21,256,388
Factor Arrows
2628,194
Factor Arrows
2314,097
Factor Arrows
3104,699
Factor Arrows
714,957

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, 14957

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 7 x 14,957 = 20,102,208

This can also be written as 26 x 31 x 71 x 14,9571 = 20,102,208

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


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