Q: What are the prime factors of the number 221,100,348?

 A: 2, 3, 7, 376021

Why are those the prime factors of the number 221,100,348?

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 221,100,348

221,100,348
Factor Arrows
2110,550,174
Factor Arrows
255,275,087
Factor Arrows
318,425,029
Factor Arrows
72,632,147
Factor Arrows
7376,021

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, 7, 376021

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 7 x 376,021 = 221,100,348

This can also be written as 22 x 31 x 72 x 376,0211 = 221,100,348

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


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