Q: What are the prime factors of the number 278,682,048?

 A: 2, 3, 211, 2293

Why are those the prime factors of the number 278,682,048?

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 278,682,048

278,682,048
Factor Arrows
2139,341,024
Factor Arrows
269,670,512
Factor Arrows
234,835,256
Factor Arrows
217,417,628
Factor Arrows
28,708,814
Factor Arrows
24,354,407
Factor Arrows
31,451,469
Factor Arrows
3483,823
Factor Arrows
2112,293

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, 211, 2293

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 3 x 3 x 211 x 2,293 = 278,682,048

This can also be written as 26 x 32 x 2111 x 2,2931 = 278,682,048

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


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