Q: What are the prime factors of the number 84,393,153?

 A: 3, 13, 47, 103, 149

Why are those the prime factors of the number 84,393,153?

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 84,393,153

84,393,153
Factor Arrows
328,131,051
Factor Arrows
39,377,017
Factor Arrows
13721,309
Factor Arrows
4715,347
Factor Arrows
103149

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:

3, 13, 47, 103, 149

We can check our work by multiplying all of the prime factors together: 3 x 3 x 13 x 47 x 103 x 149 = 84,393,153

This can also be written as 32 x 131 x 471 x 1031 x 1491 = 84,393,153

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


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