Q: What are the prime factors of the number 100,325,340?

 A: 2, 3, 5, 107, 5209

Why are those the prime factors of the number 100,325,340?

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 100,325,340

100,325,340
Factor Arrows
250,162,670
Factor Arrows
225,081,335
Factor Arrows
38,360,445
Factor Arrows
32,786,815
Factor Arrows
5557,363
Factor Arrows
1075,209

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, 5, 107, 5209

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 107 x 5,209 = 100,325,340

This can also be written as 22 x 32 x 51 x 1071 x 5,2091 = 100,325,340

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


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