Q: What are the prime factors of the number 253,043,520?

 A: 2, 3, 5, 19, 13873

Why are those the prime factors of the number 253,043,520?

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 253,043,520

253,043,520
Factor Arrows
2126,521,760
Factor Arrows
263,260,880
Factor Arrows
231,630,440
Factor Arrows
215,815,220
Factor Arrows
27,907,610
Factor Arrows
23,953,805
Factor Arrows
31,317,935
Factor Arrows
5263,587
Factor Arrows
1913,873

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, 5, 19, 13873

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 5 x 19 x 13,873 = 253,043,520

This can also be written as 26 x 31 x 51 x 191 x 13,8731 = 253,043,520

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


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