Q: What are the prime factors of the number 221,620,652?

 A: 2, 11, 383, 13151

Why are those the prime factors of the number 221,620,652?

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 221,620,652

221,620,652
Factor Arrows
2110,810,326
Factor Arrows
255,405,163
Factor Arrows
115,036,833
Factor Arrows
38313,151

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, 383, 13151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 383 x 13,151 = 221,620,652

This can also be written as 22 x 111 x 3831 x 13,1511 = 221,620,652

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


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