Q: What are the prime factors of the number 51,718,275?

 A: 3, 5, 7, 4691

Why are those the prime factors of the number 51,718,275?

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 51,718,275

51,718,275
Factor Arrows
317,239,425
Factor Arrows
35,746,475
Factor Arrows
51,149,295
Factor Arrows
5229,859
Factor Arrows
732,837
Factor Arrows
74,691

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:

3, 5, 7, 4691

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 7 x 7 x 4,691 = 51,718,275

This can also be written as 32 x 52 x 72 x 4,6911 = 51,718,275

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


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