Q: What are the prime factors of the number 5,237,946?

 A: 2, 3, 7, 31, 149

Why are those the prime factors of the number 5,237,946?

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 5,237,946

5,237,946
Factor Arrows
22,618,973
Factor Arrows
3872,991
Factor Arrows
3290,997
Factor Arrows
396,999
Factor Arrows
332,333
Factor Arrows
74,619
Factor Arrows
31149

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, 7, 31, 149

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 7 x 31 x 149 = 5,237,946

This can also be written as 21 x 34 x 71 x 311 x 1491 = 5,237,946

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


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