Q: What are the prime factors of the number 2,305,980?

 A: 2, 3, 5, 23, 557

Why are those the prime factors of the number 2,305,980?

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 2,305,980

2,305,980
Factor Arrows
21,152,990
Factor Arrows
2576,495
Factor Arrows
3192,165
Factor Arrows
364,055
Factor Arrows
512,811
Factor Arrows
23557

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, 23, 557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 23 x 557 = 2,305,980

This can also be written as 22 x 32 x 51 x 231 x 5571 = 2,305,980

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


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