Q: What are the prime factors of the number 13,223,178?

 A: 2, 3, 17, 79, 547

Why are those the prime factors of the number 13,223,178?

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 13,223,178

13,223,178
Factor Arrows
26,611,589
Factor Arrows
32,203,863
Factor Arrows
3734,621
Factor Arrows
1743,213
Factor Arrows
79547

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, 17, 79, 547

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 17 x 79 x 547 = 13,223,178

This can also be written as 21 x 32 x 171 x 791 x 5471 = 13,223,178

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


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