Q: What are the prime factors of the number 127,550,790?

 A: 2, 3, 5, 71, 19961

Why are those the prime factors of the number 127,550,790?

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 127,550,790

127,550,790
Factor Arrows
263,775,395
Factor Arrows
321,258,465
Factor Arrows
37,086,155
Factor Arrows
51,417,231
Factor Arrows
7119,961

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, 71, 19961

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 71 x 19,961 = 127,550,790

This can also be written as 21 x 32 x 51 x 711 x 19,9611 = 127,550,790

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


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