Q: What are the prime factors of the number 26,400,240?

 A: 2, 3, 5, 37, 991

Why are those the prime factors of the number 26,400,240?

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 26,400,240

26,400,240
Factor Arrows
213,200,120
Factor Arrows
26,600,060
Factor Arrows
23,300,030
Factor Arrows
21,650,015
Factor Arrows
3550,005
Factor Arrows
3183,335
Factor Arrows
536,667
Factor Arrows
37991

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, 991

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 37 x 991 = 26,400,240

This can also be written as 24 x 32 x 51 x 371 x 9911 = 26,400,240

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


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