Q: What are the prime factors of the number 233,121,420?

 A: 2, 3, 5, 7, 26431

Why are those the prime factors of the number 233,121,420?

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 233,121,420

233,121,420
Factor Arrows
2116,560,710
Factor Arrows
258,280,355
Factor Arrows
319,426,785
Factor Arrows
36,475,595
Factor Arrows
51,295,119
Factor Arrows
7185,017
Factor Arrows
726,431

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, 5, 7, 26431

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 7 x 7 x 26,431 = 233,121,420

This can also be written as 22 x 32 x 51 x 72 x 26,4311 = 233,121,420

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


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