Q: What are the prime factors of the number 25,143,424?

 A: 2, 37, 5309

Why are those the prime factors of the number 25,143,424?

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 25,143,424

25,143,424
Factor Arrows
212,571,712
Factor Arrows
26,285,856
Factor Arrows
23,142,928
Factor Arrows
21,571,464
Factor Arrows
2785,732
Factor Arrows
2392,866
Factor Arrows
2196,433
Factor Arrows
375,309

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, 37, 5309

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 37 x 5,309 = 25,143,424

This can also be written as 27 x 371 x 5,3091 = 25,143,424

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


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