Q: What are the prime factors of the number 2,253,824?

 A: 2, 31, 71

Why are those the prime factors of the number 2,253,824?

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 2,253,824

2,253,824
Factor Arrows
21,126,912
Factor Arrows
2563,456
Factor Arrows
2281,728
Factor Arrows
2140,864
Factor Arrows
270,432
Factor Arrows
235,216
Factor Arrows
217,608
Factor Arrows
28,804
Factor Arrows
24,402
Factor Arrows
22,201
Factor Arrows
3171

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, 31, 71

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 2 x 2 x 2 x 2 x 31 x 71 = 2,253,824

This can also be written as 210 x 311 x 711 = 2,253,824

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


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