Q: What are the prime factors of the number 401,223,204?

 A: 2, 3, 31, 233, 1543

Why are those the prime factors of the number 401,223,204?

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 401,223,204

401,223,204
Factor Arrows
2200,611,602
Factor Arrows
2100,305,801
Factor Arrows
333,435,267
Factor Arrows
311,145,089
Factor Arrows
31359,519
Factor Arrows
2331,543

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, 31, 233, 1543

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 31 x 233 x 1,543 = 401,223,204

This can also be written as 22 x 32 x 311 x 2331 x 1,5431 = 401,223,204

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


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