Q: What are the prime factors of the number 28,395,310?

 A: 2, 5, 19, 199, 751

Why are those the prime factors of the number 28,395,310?

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 28,395,310

28,395,310
Factor Arrows
214,197,655
Factor Arrows
52,839,531
Factor Arrows
19149,449
Factor Arrows
199751

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, 19, 199, 751

We can check our work by multiplying all of the prime factors together: 2 x 5 x 19 x 199 x 751 = 28,395,310

This can also be written as 21 x 51 x 191 x 1991 x 7511 = 28,395,310

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


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