Q: What are the prime factors of the number 25,445,504?

 A: 2, 7, 4057

Why are those the prime factors of the number 25,445,504?

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 25,445,504

25,445,504
Factor Arrows
212,722,752
Factor Arrows
26,361,376
Factor Arrows
23,180,688
Factor Arrows
21,590,344
Factor Arrows
2795,172
Factor Arrows
2397,586
Factor Arrows
2198,793
Factor Arrows
728,399
Factor Arrows
74,057

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, 7, 4057

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 7 x 7 x 4,057 = 25,445,504

This can also be written as 27 x 72 x 4,0571 = 25,445,504

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


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