Q: What are the prime factors of the number 25,042,450?

 A: 2, 5, 401, 1249

Why are those the prime factors of the number 25,042,450?

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 25,042,450

25,042,450
Factor Arrows
212,521,225
Factor Arrows
52,504,245
Factor Arrows
5500,849
Factor Arrows
4011,249

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, 401, 1249

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 401 x 1,249 = 25,042,450

This can also be written as 21 x 52 x 4011 x 1,2491 = 25,042,450

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


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