Q: What are the prime factors of the number 231,151,555?

 A: 5, 151, 211, 1451

Why are those the prime factors of the number 231,151,555?

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 231,151,555

231,151,555
Factor Arrows
546,230,311
Factor Arrows
151306,161
Factor Arrows
2111,451

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:

5, 151, 211, 1451

We can check our work by multiplying all of the prime factors together: 5 x 151 x 211 x 1,451 = 231,151,555

This can also be written as 51 x 1511 x 2111 x 1,4511 = 231,151,555

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


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