Q: What are the prime factors of the number 263,161,216?

 A: 2, 23, 71, 1259

Why are those the prime factors of the number 263,161,216?

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 263,161,216

263,161,216
Factor Arrows
2131,580,608
Factor Arrows
265,790,304
Factor Arrows
232,895,152
Factor Arrows
216,447,576
Factor Arrows
28,223,788
Factor Arrows
24,111,894
Factor Arrows
22,055,947
Factor Arrows
2389,389
Factor Arrows
711,259

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, 23, 71, 1259

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 23 x 71 x 1,259 = 263,161,216

This can also be written as 27 x 231 x 711 x 1,2591 = 263,161,216

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


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