Q: What are the prime factors of the number 84,737,792?

 A: 2, 17, 19471

Why are those the prime factors of the number 84,737,792?

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 84,737,792

84,737,792
Factor Arrows
242,368,896
Factor Arrows
221,184,448
Factor Arrows
210,592,224
Factor Arrows
25,296,112
Factor Arrows
22,648,056
Factor Arrows
21,324,028
Factor Arrows
2662,014
Factor Arrows
2331,007
Factor Arrows
1719,471

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, 19471

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 19,471 = 84,737,792

This can also be written as 28 x 171 x 19,4711 = 84,737,792

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


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