Q: What are the prime factors of the number 25,782,784?

 A: 2, 37, 1361

Why are those the prime factors of the number 25,782,784?

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 25,782,784

25,782,784
Factor Arrows
212,891,392
Factor Arrows
26,445,696
Factor Arrows
23,222,848
Factor Arrows
21,611,424
Factor Arrows
2805,712
Factor Arrows
2402,856
Factor Arrows
2201,428
Factor Arrows
2100,714
Factor Arrows
250,357
Factor Arrows
371,361

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, 1361

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 2 x 2 x 37 x 1,361 = 25,782,784

This can also be written as 29 x 371 x 1,3611 = 25,782,784

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


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