Q: What are the prime factors of the number 211,131,024?

 A: 2, 3, 13, 17, 1531

Why are those the prime factors of the number 211,131,024?

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 211,131,024

211,131,024
Factor Arrows
2105,565,512
Factor Arrows
252,782,756
Factor Arrows
226,391,378
Factor Arrows
213,195,689
Factor Arrows
34,398,563
Factor Arrows
13338,351
Factor Arrows
1326,027
Factor Arrows
171,531

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, 13, 17, 1531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 13 x 13 x 17 x 1,531 = 211,131,024

This can also be written as 24 x 31 x 132 x 171 x 1,5311 = 211,131,024

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


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