Q: What are the prime factors of the number 25,487,451?

 A: 3, 11, 101, 2549

Why are those the prime factors of the number 25,487,451?

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 25,487,451

25,487,451
Factor Arrows
38,495,817
Factor Arrows
32,831,939
Factor Arrows
11257,449
Factor Arrows
1012,549

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, 11, 101, 2549

We can check our work by multiplying all of the prime factors together: 3 x 3 x 11 x 101 x 2,549 = 25,487,451

This can also be written as 32 x 111 x 1011 x 2,5491 = 25,487,451

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


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