Q: What are the prime factors of the number 4,291,812?

 A: 2, 3, 7, 811

Why are those the prime factors of the number 4,291,812?

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 4,291,812

4,291,812
Factor Arrows
22,145,906
Factor Arrows
21,072,953
Factor Arrows
3357,651
Factor Arrows
3119,217
Factor Arrows
339,739
Factor Arrows
75,677
Factor Arrows
7811

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, 811

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 7 x 811 = 4,291,812

This can also be written as 22 x 33 x 72 x 8111 = 4,291,812

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


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