Q: What are the prime factors of the number 133,143,228?

 A: 2, 3, 23, 401

Why are those the prime factors of the number 133,143,228?

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 133,143,228

133,143,228
Factor Arrows
266,571,614
Factor Arrows
233,285,807
Factor Arrows
311,095,269
Factor Arrows
33,698,423
Factor Arrows
23160,801
Factor Arrows
401401

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, 23, 401

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 23 x 401 x 401 = 133,143,228

This can also be written as 22 x 32 x 231 x 4012 = 133,143,228

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


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