Q: What are the prime factors of the number 180,778?

 A: 2, 13, 17, 409

Why are those the prime factors of the number 180,778?

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 180,778

180,778
Factor Arrows
290,389
Factor Arrows
136,953
Factor Arrows
17409

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, 13, 17, 409

We can check our work by multiplying all of the prime factors together: 2 x 13 x 17 x 409 = 180,778

This can also be written as 21 x 131 x 171 x 4091 = 180,778

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


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