Q: What are the prime factors of the number 25,541,400?

 A: 2, 3, 5, 42569

Why are those the prime factors of the number 25,541,400?

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 25,541,400

25,541,400
Factor Arrows
212,770,700
Factor Arrows
26,385,350
Factor Arrows
23,192,675
Factor Arrows
31,064,225
Factor Arrows
5212,845
Factor Arrows
542,569

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, 42569

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 42,569 = 25,541,400

This can also be written as 23 x 31 x 52 x 42,5691 = 25,541,400

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


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