Q: What are the prime factors of the number 25,517,228?

 A: 2, 11, 19, 131, 233

Why are those the prime factors of the number 25,517,228?

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 25,517,228

25,517,228
Factor Arrows
212,758,614
Factor Arrows
26,379,307
Factor Arrows
11579,937
Factor Arrows
1930,523
Factor Arrows
131233

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, 19, 131, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 19 x 131 x 233 = 25,517,228

This can also be written as 22 x 111 x 191 x 1311 x 2331 = 25,517,228

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


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