Q: What are the prime factors of the number 17,543,856?

 A: 2, 3, 11, 149, 223

Why are those the prime factors of the number 17,543,856?

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 17,543,856

17,543,856
Factor Arrows
28,771,928
Factor Arrows
24,385,964
Factor Arrows
22,192,982
Factor Arrows
21,096,491
Factor Arrows
3365,497
Factor Arrows
1133,227
Factor Arrows
149223

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, 149, 223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 11 x 149 x 223 = 17,543,856

This can also be written as 24 x 31 x 111 x 1491 x 2231 = 17,543,856

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


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