Q: What are the prime factors of the number 20,312,127?

 A: 3, 11, 17, 149

Why are those the prime factors of the number 20,312,127?

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 20,312,127

20,312,127
Factor Arrows
36,770,709
Factor Arrows
32,256,903
Factor Arrows
3752,301
Factor Arrows
3250,767
Factor Arrows
383,589
Factor Arrows
327,863
Factor Arrows
112,533
Factor Arrows
17149

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, 11, 17, 149

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 11 x 17 x 149 = 20,312,127

This can also be written as 36 x 111 x 171 x 1491 = 20,312,127

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


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