Q: What are the prime factors of the number 2,982,408?

 A: 2, 3, 11, 13, 79

Why are those the prime factors of the number 2,982,408?

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 2,982,408

2,982,408
Factor Arrows
21,491,204
Factor Arrows
2745,602
Factor Arrows
2372,801
Factor Arrows
3124,267
Factor Arrows
1111,297
Factor Arrows
111,027
Factor Arrows
1379

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, 13, 79

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 11 x 13 x 79 = 2,982,408

This can also be written as 23 x 31 x 112 x 131 x 791 = 2,982,408

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


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