Q: What are the prime factors of the number 164,333,040?

 A: 2, 3, 5, 613, 1117

Why are those the prime factors of the number 164,333,040?

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 164,333,040

164,333,040
Factor Arrows
282,166,520
Factor Arrows
241,083,260
Factor Arrows
220,541,630
Factor Arrows
210,270,815
Factor Arrows
33,423,605
Factor Arrows
5684,721
Factor Arrows
6131,117

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, 613, 1117

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 613 x 1,117 = 164,333,040

This can also be written as 24 x 31 x 51 x 6131 x 1,1171 = 164,333,040

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


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