Q: What are the prime factors of the number 3,455,946?

 A: 2, 3, 13, 547

Why are those the prime factors of the number 3,455,946?

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 3,455,946

3,455,946
Factor Arrows
21,727,973
Factor Arrows
3575,991
Factor Arrows
3191,997
Factor Arrows
363,999
Factor Arrows
321,333
Factor Arrows
37,111
Factor Arrows
13547

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, 13, 547

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 13 x 547 = 3,455,946

This can also be written as 21 x 35 x 131 x 5471 = 3,455,946

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


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