Q: What are the prime factors of the number 133,841,760?

 A: 2, 3, 5, 13, 89, 241

Why are those the prime factors of the number 133,841,760?

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 133,841,760

133,841,760
Factor Arrows
266,920,880
Factor Arrows
233,460,440
Factor Arrows
216,730,220
Factor Arrows
28,365,110
Factor Arrows
24,182,555
Factor Arrows
31,394,185
Factor Arrows
5278,837
Factor Arrows
1321,449
Factor Arrows
89241

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, 5, 13, 89, 241

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 13 x 89 x 241 = 133,841,760

This can also be written as 25 x 31 x 51 x 131 x 891 x 2411 = 133,841,760

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


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