Q: What are the prime factors of the number 125,305,520?

 A: 2, 5, 29, 54011

Why are those the prime factors of the number 125,305,520?

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 125,305,520

125,305,520
Factor Arrows
262,652,760
Factor Arrows
231,326,380
Factor Arrows
215,663,190
Factor Arrows
27,831,595
Factor Arrows
51,566,319
Factor Arrows
2954,011

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, 29, 54011

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 29 x 54,011 = 125,305,520

This can also be written as 24 x 51 x 291 x 54,0111 = 125,305,520

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


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