Q: What are the prime factors of the number 726,080,256?

 A: 2, 3, 11, 28649

Why are those the prime factors of the number 726,080,256?

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 726,080,256

726,080,256
Factor Arrows
2363,040,128
Factor Arrows
2181,520,064
Factor Arrows
290,760,032
Factor Arrows
245,380,016
Factor Arrows
222,690,008
Factor Arrows
211,345,004
Factor Arrows
25,672,502
Factor Arrows
22,836,251
Factor Arrows
3945,417
Factor Arrows
3315,139
Factor Arrows
1128,649

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, 11, 28649

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 11 x 28,649 = 726,080,256

This can also be written as 28 x 32 x 111 x 28,6491 = 726,080,256

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


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