Q: What are the prime factors of the number 280,426,384?

 A: 2, 7, 139, 18013

Why are those the prime factors of the number 280,426,384?

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 280,426,384

280,426,384
Factor Arrows
2140,213,192
Factor Arrows
270,106,596
Factor Arrows
235,053,298
Factor Arrows
217,526,649
Factor Arrows
72,503,807
Factor Arrows
13918,013

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, 139, 18013

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 139 x 18,013 = 280,426,384

This can also be written as 24 x 71 x 1391 x 18,0131 = 280,426,384

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


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