Q: What are the prime factors of the number 104,240,500?

 A: 2, 5, 7, 13, 29, 79

Why are those the prime factors of the number 104,240,500?

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 104,240,500

104,240,500
Factor Arrows
252,120,250
Factor Arrows
226,060,125
Factor Arrows
55,212,025
Factor Arrows
51,042,405
Factor Arrows
5208,481
Factor Arrows
729,783
Factor Arrows
132,291
Factor Arrows
2979

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, 13, 29, 79

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 7 x 13 x 29 x 79 = 104,240,500

This can also be written as 22 x 53 x 71 x 131 x 291 x 791 = 104,240,500

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


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