Q: What are the prime factors of the number 240,405,030?

 A: 2, 3, 5, 521, 1709

Why are those the prime factors of the number 240,405,030?

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 240,405,030

240,405,030
Factor Arrows
2120,202,515
Factor Arrows
340,067,505
Factor Arrows
313,355,835
Factor Arrows
34,451,945
Factor Arrows
5890,389
Factor Arrows
5211,709

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, 521, 1709

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 521 x 1,709 = 240,405,030

This can also be written as 21 x 33 x 51 x 5211 x 1,7091 = 240,405,030

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


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