Q: What are the prime factors of the number 127,238,640?

 A: 2, 3, 5, 151, 3511

Why are those the prime factors of the number 127,238,640?

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 127,238,640

127,238,640
Factor Arrows
263,619,320
Factor Arrows
231,809,660
Factor Arrows
215,904,830
Factor Arrows
27,952,415
Factor Arrows
32,650,805
Factor Arrows
5530,161
Factor Arrows
1513,511

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, 151, 3511

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 151 x 3,511 = 127,238,640

This can also be written as 24 x 31 x 51 x 1511 x 3,5111 = 127,238,640

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


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