Q: What are the prime factors of the number 11,243,358?

 A: 2, 3, 7, 17, 29, 181

Why are those the prime factors of the number 11,243,358?

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 11,243,358

11,243,358
Factor Arrows
25,621,679
Factor Arrows
31,873,893
Factor Arrows
3624,631
Factor Arrows
789,233
Factor Arrows
175,249
Factor Arrows
29181

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, 7, 17, 29, 181

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 17 x 29 x 181 = 11,243,358

This can also be written as 21 x 32 x 71 x 171 x 291 x 1811 = 11,243,358

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


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