Q: What are the prime factors of the number 100,153,344?

 A: 2, 3, 16301

Why are those the prime factors of the number 100,153,344?

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 100,153,344

100,153,344
Factor Arrows
250,076,672
Factor Arrows
225,038,336
Factor Arrows
212,519,168
Factor Arrows
26,259,584
Factor Arrows
23,129,792
Factor Arrows
21,564,896
Factor Arrows
2782,448
Factor Arrows
2391,224
Factor Arrows
2195,612
Factor Arrows
297,806
Factor Arrows
248,903
Factor Arrows
316,301

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, 16301

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 2 x 2 x 2 x 3 x 16,301 = 100,153,344

This can also be written as 211 x 31 x 16,3011 = 100,153,344

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


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