Q: What are the prime factors of the number 142,672,768?

 A: 2, 7, 159233

Why are those the prime factors of the number 142,672,768?

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 142,672,768

142,672,768
Factor Arrows
271,336,384
Factor Arrows
235,668,192
Factor Arrows
217,834,096
Factor Arrows
28,917,048
Factor Arrows
24,458,524
Factor Arrows
22,229,262
Factor Arrows
21,114,631
Factor Arrows
7159,233

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, 7, 159233

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 7 x 159,233 = 142,672,768

This can also be written as 27 x 71 x 159,2331 = 142,672,768

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


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