Q: What are the prime factors of the number 221,204,412?

 A: 2, 3, 11, 13, 14323

Why are those the prime factors of the number 221,204,412?

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 221,204,412

221,204,412
Factor Arrows
2110,602,206
Factor Arrows
255,301,103
Factor Arrows
318,433,701
Factor Arrows
36,144,567
Factor Arrows
32,048,189
Factor Arrows
11186,199
Factor Arrows
1314,323

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, 3, 11, 13, 14323

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 11 x 13 x 14,323 = 221,204,412

This can also be written as 22 x 33 x 111 x 131 x 14,3231 = 221,204,412

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


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