Q: What are the prime factors of the number 99,323,540?

 A: 2, 5, 37, 79, 1699

Why are those the prime factors of the number 99,323,540?

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 99,323,540

99,323,540
Factor Arrows
249,661,770
Factor Arrows
224,830,885
Factor Arrows
54,966,177
Factor Arrows
37134,221
Factor Arrows
791,699

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, 37, 79, 1699

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 37 x 79 x 1,699 = 99,323,540

This can also be written as 22 x 51 x 371 x 791 x 1,6991 = 99,323,540

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


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