Q: What are the prime factors of the number 261,234,150?

 A: 2, 3, 5, 73, 23857

Why are those the prime factors of the number 261,234,150?

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 261,234,150

261,234,150
Factor Arrows
2130,617,075
Factor Arrows
343,539,025
Factor Arrows
58,707,805
Factor Arrows
51,741,561
Factor Arrows
7323,857

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, 73, 23857

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 73 x 23,857 = 261,234,150

This can also be written as 21 x 31 x 52 x 731 x 23,8571 = 261,234,150

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


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