Q: What are the prime factors of the number 25,642,342?

 A: 2, 11, 977, 1193

Why are those the prime factors of the number 25,642,342?

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 25,642,342

25,642,342
Factor Arrows
212,821,171
Factor Arrows
111,165,561
Factor Arrows
9771,193

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, 11, 977, 1193

We can check our work by multiplying all of the prime factors together: 2 x 11 x 977 x 1,193 = 25,642,342

This can also be written as 21 x 111 x 9771 x 1,1931 = 25,642,342

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


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