Q: What are the prime factors of the number 160,722,144?

 A: 2, 3, 11, 1879

Why are those the prime factors of the number 160,722,144?

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 160,722,144

160,722,144
Factor Arrows
280,361,072
Factor Arrows
240,180,536
Factor Arrows
220,090,268
Factor Arrows
210,045,134
Factor Arrows
25,022,567
Factor Arrows
31,674,189
Factor Arrows
3558,063
Factor Arrows
3186,021
Factor Arrows
362,007
Factor Arrows
320,669
Factor Arrows
111,879

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, 1879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 11 x 1,879 = 160,722,144

This can also be written as 25 x 35 x 111 x 1,8791 = 160,722,144

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


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