Q: What are the prime factors of the number 211,322,133?

 A: 3, 11, 31, 37, 1861

Why are those the prime factors of the number 211,322,133?

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 211,322,133

211,322,133
Factor Arrows
370,440,711
Factor Arrows
323,480,237
Factor Arrows
112,134,567
Factor Arrows
3168,857
Factor Arrows
371,861

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:

3, 11, 31, 37, 1861

We can check our work by multiplying all of the prime factors together: 3 x 3 x 11 x 31 x 37 x 1,861 = 211,322,133

This can also be written as 32 x 111 x 311 x 371 x 1,8611 = 211,322,133

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


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