Q: What are the prime factors of the number 162,055,424?

 A: 2, 17, 23, 1619

Why are those the prime factors of the number 162,055,424?

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 162,055,424

162,055,424
Factor Arrows
281,027,712
Factor Arrows
240,513,856
Factor Arrows
220,256,928
Factor Arrows
210,128,464
Factor Arrows
25,064,232
Factor Arrows
22,532,116
Factor Arrows
21,266,058
Factor Arrows
2633,029
Factor Arrows
1737,237
Factor Arrows
231,619

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, 17, 23, 1619

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 2 x 17 x 23 x 1,619 = 162,055,424

This can also be written as 28 x 171 x 231 x 1,6191 = 162,055,424

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


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