Q: What are the prime factors of the number 17,262,720?

 A: 2, 3, 5, 37

Why are those the prime factors of the number 17,262,720?

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 17,262,720

17,262,720
Factor Arrows
28,631,360
Factor Arrows
24,315,680
Factor Arrows
22,157,840
Factor Arrows
21,078,920
Factor Arrows
2539,460
Factor Arrows
2269,730
Factor Arrows
2134,865
Factor Arrows
344,955
Factor Arrows
314,985
Factor Arrows
34,995
Factor Arrows
31,665
Factor Arrows
3555
Factor Arrows
3185
Factor Arrows
537

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

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 3 x 3 x 3 x 3 x 3 x 3 x 5 x 37 = 17,262,720

This can also be written as 27 x 36 x 51 x 371 = 17,262,720

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


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