Q: What are the prime factors of the number 727,825,155?

 A: 3, 5, 109, 163, 2731

Why are those the prime factors of the number 727,825,155?

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 727,825,155

727,825,155
Factor Arrows
3242,608,385
Factor Arrows
548,521,677
Factor Arrows
109445,153
Factor Arrows
1632,731

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:

3, 5, 109, 163, 2731

We can check our work by multiplying all of the prime factors together: 3 x 5 x 109 x 163 x 2,731 = 727,825,155

This can also be written as 31 x 51 x 1091 x 1631 x 2,7311 = 727,825,155

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


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