Q: What are the prime factors of the number 261,536,480?

 A: 2, 5, 1634603

Why are those the prime factors of the number 261,536,480?

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 261,536,480

261,536,480
Factor Arrows
2130,768,240
Factor Arrows
265,384,120
Factor Arrows
232,692,060
Factor Arrows
216,346,030
Factor Arrows
28,173,015
Factor Arrows
51,634,603

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, 5, 1634603

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 1,634,603 = 261,536,480

This can also be written as 25 x 51 x 1,634,6031 = 261,536,480

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


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