Q: What are the prime factors of the number 101,243,328?

 A: 2, 3, 43, 12263

Why are those the prime factors of the number 101,243,328?

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 101,243,328

101,243,328
Factor Arrows
250,621,664
Factor Arrows
225,310,832
Factor Arrows
212,655,416
Factor Arrows
26,327,708
Factor Arrows
23,163,854
Factor Arrows
21,581,927
Factor Arrows
3527,309
Factor Arrows
4312,263

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, 43, 12263

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 43 x 12,263 = 101,243,328

This can also be written as 26 x 31 x 431 x 12,2631 = 101,243,328

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


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