Q: What are the prime factors of the number 25,353,540?

 A: 2, 3, 5, 29, 1619

Why are those the prime factors of the number 25,353,540?

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 25,353,540

25,353,540
Factor Arrows
212,676,770
Factor Arrows
26,338,385
Factor Arrows
32,112,795
Factor Arrows
3704,265
Factor Arrows
3234,755
Factor Arrows
546,951
Factor Arrows
291,619

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, 1619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 29 x 1,619 = 25,353,540

This can also be written as 22 x 33 x 51 x 291 x 1,6191 = 25,353,540

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


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