Q: What are the prime factors of the number 256,835,722?

 A: 2, 11, 13, 37, 1867

Why are those the prime factors of the number 256,835,722?

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 256,835,722

256,835,722
Factor Arrows
2128,417,861
Factor Arrows
1111,674,351
Factor Arrows
13898,027
Factor Arrows
1369,079
Factor Arrows
371,867

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, 11, 13, 37, 1867

We can check our work by multiplying all of the prime factors together: 2 x 11 x 13 x 13 x 37 x 1,867 = 256,835,722

This can also be written as 21 x 111 x 132 x 371 x 1,8671 = 256,835,722

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


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