Q: What are the prime factors of the number 8,029,440?

 A: 2, 3, 5, 17, 41

Why are those the prime factors of the number 8,029,440?

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 8,029,440

8,029,440
Factor Arrows
24,014,720
Factor Arrows
22,007,360
Factor Arrows
21,003,680
Factor Arrows
2501,840
Factor Arrows
2250,920
Factor Arrows
2125,460
Factor Arrows
262,730
Factor Arrows
231,365
Factor Arrows
310,455
Factor Arrows
33,485
Factor Arrows
5697
Factor Arrows
1741

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, 17, 41

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 2 x 3 x 3 x 5 x 17 x 41 = 8,029,440

This can also be written as 28 x 32 x 51 x 171 x 411 = 8,029,440

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


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