Q: What are the prime factors of the number 102,020,128?

 A: 2, 7, 17, 73, 367

Why are those the prime factors of the number 102,020,128?

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 102,020,128

102,020,128
Factor Arrows
251,010,064
Factor Arrows
225,505,032
Factor Arrows
212,752,516
Factor Arrows
26,376,258
Factor Arrows
23,188,129
Factor Arrows
7455,447
Factor Arrows
1726,791
Factor Arrows
73367

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, 17, 73, 367

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 17 x 73 x 367 = 102,020,128

This can also be written as 25 x 71 x 171 x 731 x 3671 = 102,020,128

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


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