Q: What are the prime factors of the number 261,780,048?

 A: 2, 3, 1049, 1733

Why are those the prime factors of the number 261,780,048?

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 261,780,048

261,780,048
Factor Arrows
2130,890,024
Factor Arrows
265,445,012
Factor Arrows
232,722,506
Factor Arrows
216,361,253
Factor Arrows
35,453,751
Factor Arrows
31,817,917
Factor Arrows
1,0491,733

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, 1049, 1733

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 1,049 x 1,733 = 261,780,048

This can also be written as 24 x 32 x 1,0491 x 1,7331 = 261,780,048

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


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