Q: What are the prime factors of the number 166,103,424?

 A: 2, 3, 23, 6269

Why are those the prime factors of the number 166,103,424?

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 166,103,424

166,103,424
Factor Arrows
283,051,712
Factor Arrows
241,525,856
Factor Arrows
220,762,928
Factor Arrows
210,381,464
Factor Arrows
25,190,732
Factor Arrows
22,595,366
Factor Arrows
21,297,683
Factor Arrows
3432,561
Factor Arrows
3144,187
Factor Arrows
236,269

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, 23, 6269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 23 x 6,269 = 166,103,424

This can also be written as 27 x 32 x 231 x 6,2691 = 166,103,424

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


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