Q: What are the prime factors of the number 51,807,280?

 A: 2, 5, 7, 71, 1303

Why are those the prime factors of the number 51,807,280?

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 51,807,280

51,807,280
Factor Arrows
225,903,640
Factor Arrows
212,951,820
Factor Arrows
26,475,910
Factor Arrows
23,237,955
Factor Arrows
5647,591
Factor Arrows
792,513
Factor Arrows
711,303

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, 7, 71, 1303

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 71 x 1,303 = 51,807,280

This can also be written as 24 x 51 x 71 x 711 x 1,3031 = 51,807,280

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


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