Q: What are the prime factors of the number 256,750,648?

 A: 2, 7, 11, 19, 21937

Why are those the prime factors of the number 256,750,648?

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 256,750,648

256,750,648
Factor Arrows
2128,375,324
Factor Arrows
264,187,662
Factor Arrows
232,093,831
Factor Arrows
74,584,833
Factor Arrows
11416,803
Factor Arrows
1921,937

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, 7, 11, 19, 21937

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 19 x 21,937 = 256,750,648

This can also be written as 23 x 71 x 111 x 191 x 21,9371 = 256,750,648

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


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