Q: What are the prime factors of the number 12,365,100?

 A: 2, 3, 5, 11, 1249

Why are those the prime factors of the number 12,365,100?

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 12,365,100

12,365,100
Factor Arrows
26,182,550
Factor Arrows
23,091,275
Factor Arrows
31,030,425
Factor Arrows
3343,475
Factor Arrows
568,695
Factor Arrows
513,739
Factor Arrows
111,249

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, 1249

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 11 x 1,249 = 12,365,100

This can also be written as 22 x 32 x 52 x 111 x 1,2491 = 12,365,100

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


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