Q: What are the prime factors of the number 12,409,650?

 A: 2, 3, 5, 11, 23, 109

Why are those the prime factors of the number 12,409,650?

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 12,409,650

12,409,650
Factor Arrows
26,204,825
Factor Arrows
32,068,275
Factor Arrows
3689,425
Factor Arrows
5137,885
Factor Arrows
527,577
Factor Arrows
112,507
Factor Arrows
23109

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, 11, 23, 109

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 11 x 23 x 109 = 12,409,650

This can also be written as 21 x 32 x 52 x 111 x 231 x 1091 = 12,409,650

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


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