Q: What are the prime factors of the number 3,853,808?

 A: 2, 7, 19, 1811

Why are those the prime factors of the number 3,853,808?

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 3,853,808

3,853,808
Factor Arrows
21,926,904
Factor Arrows
2963,452
Factor Arrows
2481,726
Factor Arrows
2240,863
Factor Arrows
734,409
Factor Arrows
191,811

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, 7, 19, 1811

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 19 x 1,811 = 3,853,808

This can also be written as 24 x 71 x 191 x 1,8111 = 3,853,808

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


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