Q: What are the prime factors of the number 100,704,380?

 A: 2, 5, 7, 37, 19441

Why are those the prime factors of the number 100,704,380?

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 100,704,380

100,704,380
Factor Arrows
250,352,190
Factor Arrows
225,176,095
Factor Arrows
55,035,219
Factor Arrows
7719,317
Factor Arrows
3719,441

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, 5, 7, 37, 19441

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 37 x 19,441 = 100,704,380

This can also be written as 22 x 51 x 71 x 371 x 19,4411 = 100,704,380

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


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