Q: What are the prime factors of the number 221,433,536?

 A: 2, 3459899

Why are those the prime factors of the number 221,433,536?

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 221,433,536

221,433,536
Factor Arrows
2110,716,768
Factor Arrows
255,358,384
Factor Arrows
227,679,192
Factor Arrows
213,839,596
Factor Arrows
26,919,798
Factor Arrows
23,459,899

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, 3459899

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3,459,899 = 221,433,536

This can also be written as 26 x 3,459,8991 = 221,433,536

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


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