Q: What are the prime factors of the number 921,024?

 A: 2, 3, 13, 41

Why are those the prime factors of the number 921,024?

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 921,024

921,024
Factor Arrows
2460,512
Factor Arrows
2230,256
Factor Arrows
2115,128
Factor Arrows
257,564
Factor Arrows
228,782
Factor Arrows
214,391
Factor Arrows
34,797
Factor Arrows
31,599
Factor Arrows
3533
Factor Arrows
1341

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, 13, 41

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 13 x 41 = 921,024

This can also be written as 26 x 33 x 131 x 411 = 921,024

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


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