Q: What are the prime factors of the number 231,402,820?

 A: 2, 5, 11, 95621

Why are those the prime factors of the number 231,402,820?

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 231,402,820

231,402,820
Factor Arrows
2115,701,410
Factor Arrows
257,850,705
Factor Arrows
511,570,141
Factor Arrows
111,051,831
Factor Arrows
1195,621

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, 5, 11, 95621

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 11 x 95,621 = 231,402,820

This can also be written as 22 x 51 x 112 x 95,6211 = 231,402,820

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


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