Q: What are the prime factors of the number 51,406,080?

 A: 2, 3, 5, 11, 1217

Why are those the prime factors of the number 51,406,080?

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 51,406,080

51,406,080
Factor Arrows
225,703,040
Factor Arrows
212,851,520
Factor Arrows
26,425,760
Factor Arrows
23,212,880
Factor Arrows
21,606,440
Factor Arrows
2803,220
Factor Arrows
2401,610
Factor Arrows
2200,805
Factor Arrows
366,935
Factor Arrows
513,387
Factor Arrows
111,217

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, 11, 1217

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 11 x 1,217 = 51,406,080

This can also be written as 28 x 31 x 51 x 111 x 1,2171 = 51,406,080

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


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