Q: What are the prime factors of the number 1,505,880?

 A: 2, 3, 5, 47, 89

Why are those the prime factors of the number 1,505,880?

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 1,505,880

1,505,880
Factor Arrows
2752,940
Factor Arrows
2376,470
Factor Arrows
2188,235
Factor Arrows
362,745
Factor Arrows
320,915
Factor Arrows
54,183
Factor Arrows
4789

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, 47, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 47 x 89 = 1,505,880

This can also be written as 23 x 32 x 51 x 471 x 891 = 1,505,880

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


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