Q: What are the prime factors of the number 166,370,424?

 A: 2, 3, 11, 61, 10331

Why are those the prime factors of the number 166,370,424?

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 166,370,424

166,370,424
Factor Arrows
283,185,212
Factor Arrows
241,592,606
Factor Arrows
220,796,303
Factor Arrows
36,932,101
Factor Arrows
11630,191
Factor Arrows
6110,331

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, 61, 10331

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 61 x 10,331 = 166,370,424

This can also be written as 23 x 31 x 111 x 611 x 10,3311 = 166,370,424

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


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