Q: What are the prime factors of the number 12,420,518?

 A: 2, 11, 347, 1627

Why are those the prime factors of the number 12,420,518?

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 12,420,518

12,420,518
Factor Arrows
26,210,259
Factor Arrows
11564,569
Factor Arrows
3471,627

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, 11, 347, 1627

We can check our work by multiplying all of the prime factors together: 2 x 11 x 347 x 1,627 = 12,420,518

This can also be written as 21 x 111 x 3471 x 1,6271 = 12,420,518

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


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