Q: What are the prime factors of the number 19,946,664?

 A: 2, 3, 29, 41, 233

Why are those the prime factors of the number 19,946,664?

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 19,946,664

19,946,664
Factor Arrows
29,973,332
Factor Arrows
24,986,666
Factor Arrows
22,493,333
Factor Arrows
3831,111
Factor Arrows
3277,037
Factor Arrows
299,553
Factor Arrows
41233

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, 29, 41, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 29 x 41 x 233 = 19,946,664

This can also be written as 23 x 32 x 291 x 411 x 2331 = 19,946,664

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


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