Q: What are the prime factors of the number 22,153,338?

 A: 2, 3, 79, 577

Why are those the prime factors of the number 22,153,338?

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 22,153,338

22,153,338
Factor Arrows
211,076,669
Factor Arrows
33,692,223
Factor Arrows
31,230,741
Factor Arrows
3410,247
Factor Arrows
3136,749
Factor Arrows
345,583
Factor Arrows
79577

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, 79, 577

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 79 x 577 = 22,153,338

This can also be written as 21 x 35 x 791 x 5771 = 22,153,338

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


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