Q: What are the prime factors of the number 3,845,904?

 A: 2, 3, 19, 4217

Why are those the prime factors of the number 3,845,904?

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 3,845,904

3,845,904
Factor Arrows
21,922,952
Factor Arrows
2961,476
Factor Arrows
2480,738
Factor Arrows
2240,369
Factor Arrows
380,123
Factor Arrows
194,217

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, 19, 4217

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 19 x 4,217 = 3,845,904

This can also be written as 24 x 31 x 191 x 4,2171 = 3,845,904

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


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