Q: What are the prime factors of the number 397,504?

 A: 2, 6211

Why are those the prime factors of the number 397,504?

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 397,504

397,504
Factor Arrows
2198,752
Factor Arrows
299,376
Factor Arrows
249,688
Factor Arrows
224,844
Factor Arrows
212,422
Factor Arrows
26,211

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, 6211

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 6,211 = 397,504

This can also be written as 26 x 6,2111 = 397,504

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


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