Q: What are the prime factors of the number 280,348,768?

 A: 2, 7, 17, 83, 887

Why are those the prime factors of the number 280,348,768?

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 280,348,768

280,348,768
Factor Arrows
2140,174,384
Factor Arrows
270,087,192
Factor Arrows
235,043,596
Factor Arrows
217,521,798
Factor Arrows
28,760,899
Factor Arrows
71,251,557
Factor Arrows
1773,621
Factor Arrows
83887

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, 7, 17, 83, 887

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 17 x 83 x 887 = 280,348,768

This can also be written as 25 x 71 x 171 x 831 x 8871 = 280,348,768

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


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