Q: What are the prime factors of the number 205,230,240?

 A: 2, 3, 5, 47507

Why are those the prime factors of the number 205,230,240?

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 205,230,240

205,230,240
Factor Arrows
2102,615,120
Factor Arrows
251,307,560
Factor Arrows
225,653,780
Factor Arrows
212,826,890
Factor Arrows
26,413,445
Factor Arrows
32,137,815
Factor Arrows
3712,605
Factor Arrows
3237,535
Factor Arrows
547,507

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, 47507

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 47,507 = 205,230,240

This can also be written as 25 x 33 x 51 x 47,5071 = 205,230,240

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


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