Q: What are the prime factors of the number 4,587,840?

 A: 2, 3, 5, 59

Why are those the prime factors of the number 4,587,840?

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 4,587,840

4,587,840
Factor Arrows
22,293,920
Factor Arrows
21,146,960
Factor Arrows
2573,480
Factor Arrows
2286,740
Factor Arrows
2143,370
Factor Arrows
271,685
Factor Arrows
323,895
Factor Arrows
37,965
Factor Arrows
32,655
Factor Arrows
3885
Factor Arrows
3295
Factor Arrows
559

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, 59

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 3 x 3 x 3 x 3 x 3 x 5 x 59 = 4,587,840

This can also be written as 26 x 35 x 51 x 591 = 4,587,840

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


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