Q: What are the prime factors of the number 25,553,520?

 A: 2, 3, 5, 35491

Why are those the prime factors of the number 25,553,520?

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 25,553,520

25,553,520
Factor Arrows
212,776,760
Factor Arrows
26,388,380
Factor Arrows
23,194,190
Factor Arrows
21,597,095
Factor Arrows
3532,365
Factor Arrows
3177,455
Factor Arrows
535,491

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, 35491

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 35,491 = 25,553,520

This can also be written as 24 x 32 x 51 x 35,4911 = 25,553,520

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


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