Q: What are the prime factors of the number 104,243,400?

 A: 2, 3, 5, 29, 1997

Why are those the prime factors of the number 104,243,400?

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 104,243,400

104,243,400
Factor Arrows
252,121,700
Factor Arrows
226,060,850
Factor Arrows
213,030,425
Factor Arrows
34,343,475
Factor Arrows
31,447,825
Factor Arrows
5289,565
Factor Arrows
557,913
Factor Arrows
291,997

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, 29, 1997

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 5 x 29 x 1,997 = 104,243,400

This can also be written as 23 x 32 x 52 x 291 x 1,9971 = 104,243,400

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


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