Q: What are the prime factors of the number 263,555,120?

 A: 2, 5, 137, 139, 173

Why are those the prime factors of the number 263,555,120?

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 263,555,120

263,555,120
Factor Arrows
2131,777,560
Factor Arrows
265,888,780
Factor Arrows
232,944,390
Factor Arrows
216,472,195
Factor Arrows
53,294,439
Factor Arrows
13724,047
Factor Arrows
139173

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, 5, 137, 139, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 137 x 139 x 173 = 263,555,120

This can also be written as 24 x 51 x 1371 x 1391 x 1731 = 263,555,120

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


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