Q: What are the prime factors of the number 111,257,469?

 A: 3, 17, 43, 1879

Why are those the prime factors of the number 111,257,469?

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 111,257,469

111,257,469
Factor Arrows
337,085,823
Factor Arrows
312,361,941
Factor Arrows
34,120,647
Factor Arrows
31,373,549
Factor Arrows
1780,797
Factor Arrows
431,879

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:

3, 17, 43, 1879

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 17 x 43 x 1,879 = 111,257,469

This can also be written as 34 x 171 x 431 x 1,8791 = 111,257,469

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


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