Q: What are the prime factors of the number 100,889,334?

 A: 2, 3, 7, 13, 419

Why are those the prime factors of the number 100,889,334?

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 100,889,334

100,889,334
Factor Arrows
250,444,667
Factor Arrows
316,814,889
Factor Arrows
35,604,963
Factor Arrows
31,868,321
Factor Arrows
7266,903
Factor Arrows
738,129
Factor Arrows
75,447
Factor Arrows
13419

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, 7, 13, 419

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7 x 7 x 7 x 13 x 419 = 100,889,334

This can also be written as 21 x 33 x 73 x 131 x 4191 = 100,889,334

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


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