Q: What are the prime factors of the number 3,857,504?

 A: 2, 7, 17, 1013

Why are those the prime factors of the number 3,857,504?

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 3,857,504

3,857,504
Factor Arrows
21,928,752
Factor Arrows
2964,376
Factor Arrows
2482,188
Factor Arrows
2241,094
Factor Arrows
2120,547
Factor Arrows
717,221
Factor Arrows
171,013

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, 17, 1013

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 17 x 1,013 = 3,857,504

This can also be written as 25 x 71 x 171 x 1,0131 = 3,857,504

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


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