Q: What are the prime factors of the number 12,203,994?

 A: 2, 3, 11, 17, 73, 149

Why are those the prime factors of the number 12,203,994?

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 12,203,994

12,203,994
Factor Arrows
26,101,997
Factor Arrows
32,033,999
Factor Arrows
11184,909
Factor Arrows
1710,877
Factor Arrows
73149

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, 11, 17, 73, 149

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 17 x 73 x 149 = 12,203,994

This can also be written as 21 x 31 x 111 x 171 x 731 x 1491 = 12,203,994

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


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