Q: What are the prime factors of the number 166,234,572?

 A: 2, 3, 7, 19, 71, 163

Why are those the prime factors of the number 166,234,572?

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 166,234,572

166,234,572
Factor Arrows
283,117,286
Factor Arrows
241,558,643
Factor Arrows
313,852,881
Factor Arrows
34,617,627
Factor Arrows
31,539,209
Factor Arrows
7219,887
Factor Arrows
1911,573
Factor Arrows
71163

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, 7, 19, 71, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 19 x 71 x 163 = 166,234,572

This can also be written as 22 x 33 x 71 x 191 x 711 x 1631 = 166,234,572

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


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