Q: What are the prime factors of the number 20,659,233?

 A: 3, 7, 17, 1181

Why are those the prime factors of the number 20,659,233?

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 20,659,233

20,659,233
Factor Arrows
36,886,411
Factor Arrows
7983,773
Factor Arrows
7140,539
Factor Arrows
720,077
Factor Arrows
171,181

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:

3, 7, 17, 1181

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 7 x 17 x 1,181 = 20,659,233

This can also be written as 31 x 73 x 171 x 1,1811 = 20,659,233

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


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