Q: What are the prime factors of the number 821,612?

 A: 2, 11, 71, 263

Why are those the prime factors of the number 821,612?

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 821,612

821,612
Factor Arrows
2410,806
Factor Arrows
2205,403
Factor Arrows
1118,673
Factor Arrows
71263

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, 11, 71, 263

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 71 x 263 = 821,612

This can also be written as 22 x 111 x 711 x 2631 = 821,612

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


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