Q: What are the prime factors of the number 23,240,880?

 A: 2, 3, 5, 13, 191

Why are those the prime factors of the number 23,240,880?

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 23,240,880

23,240,880
Factor Arrows
211,620,440
Factor Arrows
25,810,220
Factor Arrows
22,905,110
Factor Arrows
21,452,555
Factor Arrows
3484,185
Factor Arrows
3161,395
Factor Arrows
532,279
Factor Arrows
132,483
Factor Arrows
13191

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, 13, 191

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 13 x 13 x 191 = 23,240,880

This can also be written as 24 x 32 x 51 x 132 x 1911 = 23,240,880

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


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