Q: What are the prime factors of the number 100,103,020?

 A: 2, 5, 19, 263429

Why are those the prime factors of the number 100,103,020?

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 100,103,020

100,103,020
Factor Arrows
250,051,510
Factor Arrows
225,025,755
Factor Arrows
55,005,151
Factor Arrows
19263,429

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, 19, 263429

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 19 x 263,429 = 100,103,020

This can also be written as 22 x 51 x 191 x 263,4291 = 100,103,020

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


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