Q: What are the prime factors of the number 100,021,212?

 A: 2, 3, 37, 61, 1231

Why are those the prime factors of the number 100,021,212?

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 100,021,212

100,021,212
Factor Arrows
250,010,606
Factor Arrows
225,005,303
Factor Arrows
38,335,101
Factor Arrows
32,778,367
Factor Arrows
3775,091
Factor Arrows
611,231

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, 37, 61, 1231

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 37 x 61 x 1,231 = 100,021,212

This can also be written as 22 x 32 x 371 x 611 x 1,2311 = 100,021,212

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


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