Q: What are the prime factors of the number 28,741,320?

 A: 2, 3, 5, 29, 2753

Why are those the prime factors of the number 28,741,320?

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 28,741,320

28,741,320
Factor Arrows
214,370,660
Factor Arrows
27,185,330
Factor Arrows
23,592,665
Factor Arrows
31,197,555
Factor Arrows
3399,185
Factor Arrows
579,837
Factor Arrows
292,753

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, 29, 2753

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 29 x 2,753 = 28,741,320

This can also be written as 23 x 32 x 51 x 291 x 2,7531 = 28,741,320

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


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