Q: What are the prime factors of the number 450,256,220?

 A: 2, 5, 17, 77899

Why are those the prime factors of the number 450,256,220?

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 450,256,220

450,256,220
Factor Arrows
2225,128,110
Factor Arrows
2112,564,055
Factor Arrows
522,512,811
Factor Arrows
171,324,283
Factor Arrows
1777,899

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, 17, 77899

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 17 x 17 x 77,899 = 450,256,220

This can also be written as 22 x 51 x 172 x 77,8991 = 450,256,220

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


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