Q: What are the prime factors of the number 255,453,040?

 A: 2, 5, 401, 7963

Why are those the prime factors of the number 255,453,040?

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 255,453,040

255,453,040
Factor Arrows
2127,726,520
Factor Arrows
263,863,260
Factor Arrows
231,931,630
Factor Arrows
215,965,815
Factor Arrows
53,193,163
Factor Arrows
4017,963

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, 401, 7963

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 401 x 7,963 = 255,453,040

This can also be written as 24 x 51 x 4011 x 7,9631 = 255,453,040

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


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