Q: What are the prime factors of the number 25,805,280?

 A: 2, 3, 5, 37, 1453

Why are those the prime factors of the number 25,805,280?

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 25,805,280

25,805,280
Factor Arrows
212,902,640
Factor Arrows
26,451,320
Factor Arrows
23,225,660
Factor Arrows
21,612,830
Factor Arrows
2806,415
Factor Arrows
3268,805
Factor Arrows
553,761
Factor Arrows
371,453

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, 3, 5, 37, 1453

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 37 x 1,453 = 25,805,280

This can also be written as 25 x 31 x 51 x 371 x 1,4531 = 25,805,280

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


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