Q: What are the prime factors of the number 133,043,120?

 A: 2, 5, 7, 37, 6421

Why are those the prime factors of the number 133,043,120?

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 133,043,120

133,043,120
Factor Arrows
266,521,560
Factor Arrows
233,260,780
Factor Arrows
216,630,390
Factor Arrows
28,315,195
Factor Arrows
51,663,039
Factor Arrows
7237,577
Factor Arrows
376,421

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, 7, 37, 6421

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 37 x 6,421 = 133,043,120

This can also be written as 24 x 51 x 71 x 371 x 6,4211 = 133,043,120

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


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