Q: What are the prime factors of the number 11,381,238?

 A: 2, 3, 11, 47, 1223

Why are those the prime factors of the number 11,381,238?

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 11,381,238

11,381,238
Factor Arrows
25,690,619
Factor Arrows
31,896,873
Factor Arrows
3632,291
Factor Arrows
1157,481
Factor Arrows
471,223

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, 11, 47, 1223

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 47 x 1,223 = 11,381,238

This can also be written as 21 x 32 x 111 x 471 x 1,2231 = 11,381,238

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


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