Q: What are the prime factors of the number 20,776,176?

 A: 2, 3, 17, 23, 41

Why are those the prime factors of the number 20,776,176?

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 20,776,176

20,776,176
Factor Arrows
210,388,088
Factor Arrows
25,194,044
Factor Arrows
22,597,022
Factor Arrows
21,298,511
Factor Arrows
3432,837
Factor Arrows
3144,279
Factor Arrows
348,093
Factor Arrows
316,031
Factor Arrows
17943
Factor Arrows
2341

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, 17, 23, 41

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 17 x 23 x 41 = 20,776,176

This can also be written as 24 x 34 x 171 x 231 x 411 = 20,776,176

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


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