Q: What are the prime factors of the number 185,416?

 A: 2, 7, 11, 43

Why are those the prime factors of the number 185,416?

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 185,416

185,416
Factor Arrows
292,708
Factor Arrows
246,354
Factor Arrows
223,177
Factor Arrows
73,311
Factor Arrows
7473
Factor Arrows
1143

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, 7, 11, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 7 x 11 x 43 = 185,416

This can also be written as 23 x 72 x 111 x 431 = 185,416

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


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