Q: Is 257,604 a Prime Number?
A: No, 257,604 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 257604 can be evenly divided by 1 2 3 4 6 12 21,467 42,934 64,401 85,868 128,802 and 257,604, with no remainder.
Since 257,604 cannot be divided by just 1 and 257,604, it is not a prime number.