Q: What are the prime factors of the number 3,933,475?

 A: 5, 7, 13, 19

Why are those the prime factors of the number 3,933,475?

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 3,933,475

3,933,475
Factor Arrows
5786,695
Factor Arrows
5157,339
Factor Arrows
722,477
Factor Arrows
73,211
Factor Arrows
13247
Factor Arrows
1319

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:

5, 7, 13, 19

We can check our work by multiplying all of the prime factors together: 5 x 5 x 7 x 7 x 13 x 13 x 19 = 3,933,475

This can also be written as 52 x 72 x 132 x 191 = 3,933,475

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


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