Q: What are the prime factors of the number 25,157,097?

 A: 3, 7, 197, 2027

Why are those the prime factors of the number 25,157,097?

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 25,157,097

25,157,097
Factor Arrows
38,385,699
Factor Arrows
32,795,233
Factor Arrows
7399,319
Factor Arrows
1972,027

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:

3, 7, 197, 2027

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 197 x 2,027 = 25,157,097

This can also be written as 32 x 71 x 1971 x 2,0271 = 25,157,097

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


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