Q: What are the prime factors of the number 101,130,432?

 A: 2, 3, 13, 31, 1307

Why are those the prime factors of the number 101,130,432?

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 101,130,432

101,130,432
Factor Arrows
250,565,216
Factor Arrows
225,282,608
Factor Arrows
212,641,304
Factor Arrows
26,320,652
Factor Arrows
23,160,326
Factor Arrows
21,580,163
Factor Arrows
3526,721
Factor Arrows
1340,517
Factor Arrows
311,307

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, 13, 31, 1307

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 3 x 13 x 31 x 1,307 = 101,130,432

This can also be written as 26 x 31 x 131 x 311 x 1,3071 = 101,130,432

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


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