Q: What are the prime factors of the number 240,662,520?

 A: 2, 3, 5, 7, 1949

Why are those the prime factors of the number 240,662,520?

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 240,662,520

240,662,520
Factor Arrows
2120,331,260
Factor Arrows
260,165,630
Factor Arrows
230,082,815
Factor Arrows
310,027,605
Factor Arrows
33,342,535
Factor Arrows
5668,507
Factor Arrows
795,501
Factor Arrows
713,643
Factor Arrows
71,949

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, 7, 1949

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 7 x 7 x 7 x 1,949 = 240,662,520

This can also be written as 23 x 32 x 51 x 73 x 1,9491 = 240,662,520

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


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