Q: What are the prime factors of the number 50,228,640?

 A: 2, 3, 5, 7, 11, 151

Why are those the prime factors of the number 50,228,640?

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 50,228,640

50,228,640
Factor Arrows
225,114,320
Factor Arrows
212,557,160
Factor Arrows
26,278,580
Factor Arrows
23,139,290
Factor Arrows
21,569,645
Factor Arrows
3523,215
Factor Arrows
3174,405
Factor Arrows
358,135
Factor Arrows
511,627
Factor Arrows
71,661
Factor Arrows
11151

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, 7, 11, 151

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 3 x 3 x 5 x 7 x 11 x 151 = 50,228,640

This can also be written as 25 x 33 x 51 x 71 x 111 x 1511 = 50,228,640

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


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