Q: What are the prime factors of the number 821,232?

 A: 2, 3, 1901

Why are those the prime factors of the number 821,232?

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 821,232

821,232
Factor Arrows
2410,616
Factor Arrows
2205,308
Factor Arrows
2102,654
Factor Arrows
251,327
Factor Arrows
317,109
Factor Arrows
35,703
Factor Arrows
31,901

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, 1901

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 1,901 = 821,232

This can also be written as 24 x 33 x 1,9011 = 821,232

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


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