Q: What are the prime factors of the number 18,239,276?

 A: 2, 11, 23, 67, 269

Why are those the prime factors of the number 18,239,276?

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 18,239,276

18,239,276
Factor Arrows
29,119,638
Factor Arrows
24,559,819
Factor Arrows
11414,529
Factor Arrows
2318,023
Factor Arrows
67269

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, 23, 67, 269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 11 x 23 x 67 x 269 = 18,239,276

This can also be written as 22 x 111 x 231 x 671 x 2691 = 18,239,276

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


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