Q: What are the prime factors of the number 14,473,440?

 A: 2, 3, 5, 19, 23

Why are those the prime factors of the number 14,473,440?

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 14,473,440

14,473,440
Factor Arrows
27,236,720
Factor Arrows
23,618,360
Factor Arrows
21,809,180
Factor Arrows
2904,590
Factor Arrows
2452,295
Factor Arrows
3150,765
Factor Arrows
350,255
Factor Arrows
510,051
Factor Arrows
19529
Factor Arrows
2323

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, 19, 23

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 3 x 5 x 19 x 23 x 23 = 14,473,440

This can also be written as 25 x 32 x 51 x 191 x 232 = 14,473,440

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


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